1. Introduction
Today’s concepts of space and time were coined by Albert Einstein. SR is based on a flat spacetime with an indefinite distance function. SR is often interpreted in Minkowski spacetime, which visualizes relativistic effects very well [
3]. Predicting the lifetime of muons [
4] is one example that supports SR. GR is based on a curved spacetime with a pseudo-Riemannian metric. The deflection of starlight during a solar eclipse [
5] and the very high accuracy of GPS [
6] are two examples that support GR. Quantum field theory [
7] unifies classical field theory, SR, and quantum mechanics (QM), but not GR.
Two postulates of ER: (1) All energy is moving through 4D Euclidean space (ES) at the speed of light . (2) The laws of physics have the same form in each observer’s reality, which is created by projecting ES orthogonally to his proper space and to his proper time. My first postulate is stronger than the second postulate of SR: is absolute and universal. My second postulate is restricted to each observer’s reality rather than to inertial frames. I also work with a generalized concept of energy: In each observer’s reality, all objects are “wavematter” (electromagnetic wave packet and matter in one).
I am not the first author to investigate ER. Montanus described ER [
8], but he tried to formulate electrodynamics in proper time [
9] and overlooked that the SO(4) symmetry of ES is not compatible with waves. Almeida studied geodesics in ES [
10]. Gersten showed that the Lorentz transformation is equivalent to an SO(4) rotation [
11]. van Linden gives an overview of ER models [
12]. However, physicists have not yet accepted ER. They reject ER because: (1) They expect waves to be covered by ER. (2) Dark energy and non-locality make cosmology and QM work. (3) ER faces paradoxes if not applied properly.
This paper marks a turning point: I show why it is fine that there are no waves in ER; I disclose an issue in SR/GR; I avoid paradoxes by projecting ES to an observer’s reality.
It is instructive to contrast Newton’s physics, Einstein’s physics, and ER. In Newton’s physics, all energy is moving through 3D Euclidean space as a function of an independent time. The speed of matter is
. In Einstein’s physics, all energy is moving through 4D non-Euclidean spacetime. The speed of matter is
. In ER, all energy is moving through 4D Euclidean space. The 4D speed of all energy is
. Newton’s physics [
13] inspired Kant’s philosophy [
14]. Will ER reform both physics and philosophy?
2. Disclosing an Issue in Special and General Relativity
There are two concepts of time in SR [
1]: an observer-related coordinate time
and proper time
of each observer/object. The fourth coordinate in SR is
. In § 1 of SR, Albert Einstein gives an instruction of how to synchronize two clocks at P and Q. At “P time”
, a light pulse is sent from P towards Q. At “Q time”
, the pulse is reflected at Q towards P. At “P time”
, it is back at P. The clock at Q synchronizes to the clock at P if
In § 3 of SR, Einstein derives the Lorentz transformation. The coordinates
of an event in a system K are transformed to the coordinates
in K’ by
where K’ moves relative to K in
at the constant speed
and
is the Lorentz factor.
Mathematically, Eqs. (1) and (2a–b) are correct for an observer R in K. There are similar equations for an observer B in K’.
Physically, SR has an issue: No device can measure
,
,
, or
. One observer (one group of observers) sets his proper space
and his proper time
equal to coordinate space
and coordinate time
. But rulers and clocks measure proper distance
and proper time
. Period. They are not aware of coordinate distance (
or
) nor of coordinate time (
or
) in SR. Nor are they aware of how an observer parameterizes spacetime in GR. Rulers and clocks are thus not able to measure what is calculated in SR/GR. Likewise, each observer describes nature in his proper concepts of space and time. He does not use the concepts of another observer! SR/GR describe the reality of just one observer (one group of observers)
each. There is no “holistic view” where all observers may use their proper concepts
at once.
The issue in SR/GR is comparable to the issue in the geocentric model: In either case, there is no holistic view, but just one perspective. In the Middle Ages, it was natural to believe that all celestial bodies would revolve around Earth. Only astronomers wondered about the retrograde loops of planets and claimed: Earth revolves around the sun. In modern times, engineers have improved the precision of rulers and clocks. Eventually, it was natural to believe that coordinate space and coordinate time in SR or else the parameterization in GR would be general concepts. How could these “extrinsic concepts” (concepts that are not immanent in rulers and clocks) be general? The human brain is very powerful, but it often deems itself the center/measure of everything in the universe.
The analogy with the geocentric model is deeper than we might expect: (1) It holds despite the covariance of SR/GR. After transforming the equations for some other observer (or else after replacing Earth with some other planet), there is again just one perspective. (2) Retrograde loops are obsolete, but only in the holistic view of the heliocentric model. Dark energy and non-locality are obsolete, but only in the holistic view of ER. (3) Natural philosophers in the Middle Ages were persecuted if they challenged the geocentric model. I had a very hard time getting my theory published because I challenge SR/GR. (4) I repeat that SR/GR are not wrong mathematically, but just like the geocentric model they miss the big picture. Have physicists not learned from history? Does history repeat itself?
3. Basic Physics of Euclidean Relativity
The indefinite distance function in SR [
1] is usually written as
where
is a distance in
and
is the related distance in
. Coordinate space
and coordinate time
span “coordinate spacetime”. This spacetime is construed because all four coordinates are construed. We may rearrange Eq. (3) if it makes sense. I will show that it does. We end up with a Euclidean metric
where
(
) and
are distances in ES. In Eq. (4), the roles of
and
have switched: The fourth coordinate in ER is an object’s proper time
(what any clock measures), and
becomes the new invariant “cosmic time”. I keep the symbol
to stress the equivalence of Eqs. (3) and (4). In ER, proper space
and proper time
of any object span “natural spacetime”, which is ES if we set
. This spacetime is natural because all four coordinates are “intrinsic concepts” (concepts that are immanent in rulers and clocks). We must not confuse the switch with the “Wick rotation” [
15], which replaces
with
, but keeps
as the invariant.
Because of the symmetry of ES, we are free to label the four axes of an object’s reference frame. We always take
as that axis in which it is moving at the speed
. The axes
span its proper space. Be aware that each object is moving in its reference frame (it is not moving in its proper space). The axes
are fixed for each object. Their orientation relative to an observer may change over time. We specify
where
is the 4D vector “proper flow of time” of an object and
is its 4D velocity. The four components of
are
. Thus, Eq. (4) matches my first postulate
Each observer’s reality is created by projecting ES orthogonally to his proper space and to his proper time . These axes are set equal to in SR (or they are parameterized in GR) and reassembled to a non-Euclidean spacetime. It sounds tricky, but it only reflects that physics has customized space and time to observers rather than to observed objects. The twofold projection indicates that space and time are treated differently in SR/GR. Because the projections are followed by setting equal to (or by a parameterization), there is no continuous transition from ER to SR/GR, and vice versa. We do not (!) integrate the differentials in Eq. (3) to get the coordinates . We take an object’s for granted rather than an observer’s .
I like to call ES the “master reality” because it is the origin of each observer’s reality. But the SO(4) symmetry of ES is not compatible with waves. This is perfectly fine because waves are observer-related features: What I deem wave, deems itself matter (see Sect. 5.12 for details). We must learn to distinguish between an observer’s reality (with waves) and the master reality (without waves). SR/GR describe an observer’s reality. ER describes the master reality. ER does not include SR/GR. Rather, ER and SR/GR apply to different realities, but the realities described by SR/GR are construed from the reality described by ER. In Sect. 5, I will demonstrate that ER penetrates to a deeper level.
It is very instructive to contrast coordinate time , proper time , and cosmic time . Coordinate time is an extrinsic measure of time: It is equal to for the observer only. Proper time is an intrinsic measure of time: It is independent of observers. Cosmic time is the total distance covered in ES (length of a geodesic in ES) divided by . Cosmic time is invariant and thus absolute. Proper time and cosmic time are subordinate quantities derived from distance and . Only by covering distance is time passing by for each object. I thus suggest to measure distance in “light seconds”, in its own new unit to be given, and time in “light seconds per this new unit”. I use Cartesian coordinates in all diagrams. Below some diagrams, I project ES to an observer’s 3D space. We are free to label the axis of relative motion in 3D space. We often take as this axis.
Let us compare SR with ER. We consider two identical clocks “r” (red clock) and “b” (blue clock). In SR, clock “r” is “at rest”: It moves only in the axis
at
. Clock “b” starts at
, but it moves in the axis
at the constant speed of
.
Figure 1 left shows that very instant when both clocks moved 1.0 s in the coordinate time of “r”. Clock “b” moved 0.6 Ls (light seconds) in
and 0.8 Ls in
(time dilation). Thus, “b” displays “0.8”. ER is different:
Figure 1 right shows that very instant when both clocks moved 1.0 s in the proper time of each clock. Clock “b” moved 0.6 Ls in
. According to Eq. (7), it also moved 0.8 Ls in
. In total, “b” moved 1.0 Ls. Thus, both clocks display “1.0”.
Now watch out as this paragraph demystifies time dilation: Let observer R be with clock “r”. Let observer B be with clock “b”. In SR, belongs to R and belongs to B. Observer R calculates (Lorentz transformation) that clock “b” displays . Thus, “b” is slow with respect to “r” in . Time dilation in SR thus occurs in , which belongs to B. In ER, belongs to R and belongs to B. Observer R measures (in his unprimed coordinate ) that clock “b” is at the position of . Thus, “b” is slow with respect to “r” in . Time dilation in ER thus occurs in , which belongs to R. In SR and ER, “b” is slow with respect to “r”. Coordinate time and are construed coordinates, whereas proper time and are measurable (physical, natural) quantities.
Gersten showed that the Lorentz transformation is equivalent to an SO(4) rotation in
[
11]. He calls these coordinates “mixed space” because
is the only primed coordinate. Such a mixed space does not make sense physically, but it serves as a hint that coordinate spacetime is not adequate to describe nature. The Lorentz transformation rotates the mixed coordinates
to
. In ER, the unmixed coordinates
appear rotated with respect to
(see Sect. 4).
There is also a huge difference in the synchronization of clocks: In SR, each observer is able to synchronize a moving clock to his clock (same value of
in
Figure 1 left). But if he does, the two clocks aren’t synchronized from the perspective of the moving clock. In ER, clocks with the same 4D vector
are always synchronized, whereas clocks with different 4D vectors
and
are never synchronized (different values of
in
Figure 1 right). Thus, synchronization of clocks in ER is not as tricky as in SR.
4. Geometric Effects in 4D Euclidean Space
We consider two identical rockets “r” (red rocket) and “b” (blue rocket) and assume: There is an observer R (or B) in the rear end of rocket “r” (or else rocket “b”) who uses
(or else
) as his coordinates.
(or
) span the 3D space of R (or else B).
(or
) relates to the proper time of R (or else B). The rockets started at the same point P and move relative to each other at the constant 3D speed
. All 3D motion is in
(or else
). The ES diagrams (
Figure 2 top) must fulfill my two postulates and the requirement that both rockets started at the same point P. We achieve this only by rotating the two reference frames with respect to each other. The projection to the 3D space of R (or else B) is shown in
Figure 2 bottom. For a better visualization, the rockets are drawn in 2D although their width is in the axes
and
.
We now confirm: (1) The reference frames of R and B are rotated with respect to each other causing length contraction. (2) The time of R and the time of B flow in different 4D directions causing time dilation. Let
(or
) be the length of rocket
as measured by R (or else B). In a first step, we project the blue rocket in
Figure 2 top left to the axis
.
where
is the same Lorentz factor as in SR. Rocket “b” appears contracted to R by the factor
. But which distances will R observe in his axis
? For the answer, we mentally continue the rotation of rocket “b” in
Figure 2 top left until it is pointing vertically down (
) and serves as R’s ruler in the axis
. In the projection to the 3D space of R, this ruler contracts to zero: The axis
disappears for R.
In a second step, we project the blue rocket in
Figure 2 top left to the axis
.
where
(or
) is the distance that B moved in
(or else
). With
(R and B cover the same distance in ES, but in different directions), we calculate
where
is the distance that R moved in
. Eqs. (9) and (12) tell us: SR works so well in an observer’s reality because the factor
is recovered in the projections.
To understand how an acceleration in 3D space manifests itself in ES, we now assume that clock “b” accelerates in the axis
of clock “r” towards Earth (
Figure 3). We also assume that “r” and Earth are moving in the axis
of “r” at the speed
. Because of Eq. (7), the speed
of “b” in
increases at the expense of its speed
in
.
Gravitational waves [
16] support the idea of GR that gravitation would be a feature of spacetime. However, particle physics is still considering gravitation a force, which has not yet been unified with the other forces of physics. I claim that curved geodesics in ES replace curved spacetime in GR. To support my claim, I now use ES coordinates to calculate gravitational time dilation. Let “r” and “b” be two identical clocks, which are far away from Earth. Initially, they are next to each other, and they are moving in the same axis
at the speed
. At some time, clock “b” is sent in free fall towards Earth in the axis
of clock “r”. The kinetic energy of clock “b” with the mass
is
where
is the gravitational constant,
is the mass of Earth, and
is the distance of clock “b” to Earth’s center. By applying Eq. (7), we get
With
(“b” moves in the axis
at the speed
) and
(“r” moves in the axis
at the speed
), we calculate
where
is the same dilation factor as in GR. Eq. (16) tells us: GR works so well in an observer’s reality because the factor
is recovered in the projection. Thus, GPS satellites do their job in ER as well as in GR! If clock “b” returns to clock “r”, the time displayed by “b” will be behind the time displayed by “r”. In ER, this dilation is due to projecting curved geodesics. In GR, it is due to a curved spacetime. Here is a short summary of how time dilation manifests in SR, GR, and ER: In SR and ER, a moving clock is slow with respect to an observer. In GR and ER, a clock in a gravitational field is slow with respect to an observer. In SR/GR, an observed clock is slow in its flow of time. In ER, an observed clock is slow in the observer’s flow of time.
Three instructive examples (
Figure 4) demonstrate how to project from ES to 3D space. Problem 1: A rocket moves along a guide wire. In ES, rocket and wire move at the speed
. We assume that the wire moves in its axis
. As the rocket moves along the wire, its speed in
must be slower than
. Wouldn’t the wire eventually be outside the rocket? Problem 2: A mirror passes a rocket. An observer in the rocket’s tip sends a light pulse to the mirror and tries to detect the reflection. In ES, all objects move at the speed
, but in different directions. We assume that the observer moves in his axis
. How can he ever detect the reflection? Problem 3: Earth revolves around the sun. We assume that the sun moves in its axis
. As Earth covers distance in
, its speed in
must be slower than
. Wouldn’t the sun escape from the orbital plane of Earth?
The questions in the last paragraph seem to imply that there are geometric paradoxes in ER, but there aren’t. The fallacy in all problems lies in the assumption that there would be four observable (spatial) dimensions. Just three distances are observable! All problems are solved by projecting ES to 3D space (
Figure 4 bottom). These projections tell us what an observer’s reality is like because “suppressing the axis
” is equivalent to “length contraction makes
disappear”. The suppressed axis
is experienced as time. We easily verify in an observer’s 3D space: The guide wire remains within the rocket; the light pulse is reflected back to the observer; the sun remains in the orbital plane of Earth.
5. Solving 15 Fundamental Mysteries of Physics
I recall: (1) Each observer’s reality is created by projecting ES. (2) In SR/GR, the four axes of such a reality are reassembled to a non-Euclidean spacetime. Because information is lost in each projection, the performance of SR/GR must be limited. In this section, I show: ER solves 15 mysteries of physics, and it declares five concepts of physics obsolete.
5.1. Solving the Mystery of Time
Cosmic time is the total distance covered in ES divided by . Proper time is what any clock measures (distance divided by ). There is no definition of coordinate time other than “what I read on my clock” (attributed to Albert Einstein himself).
5.2. Solving the Mystery of Time’s Arrow
The arrow of time is a synonym for “time moving only forward”. It emerges from the fact that the distance covered in ES is steadily increasing.
5.3. Solving the Mystery of the Factor in
In SR, where forces are absent, the total energy
of an object is given by
where
is its kinetic energy in 3D space and
is its energy at rest. SR does not tell us why there is a factor
in the energy of objects that in SR never move at the speed
. ER provides this missing clue:
is an object’s kinetic energy in the axes
of the observer,
is its kinetic energy in his axis
, and
is the sum of both energies. Eq. (17) tells us: All energy is moving through ES at the speed
. There is also
where
is the total momentum of an object and
is its momentum in 3D space. After dividing Eq. (18) by
, we recognize the vector addition of an object’s momentum
in the axes
of the observer and its momentum
in his axis
.
5.4. Solving the Mystery of Length Contraction and Time Dilation
ER discloses that length contraction and time dilation stem from projecting ES to an observer’s reality. In SR, length contraction and time dilation can be derived from the Lorentz transformation, but their physical cause remains in the dark.
5.5. Solving the Mystery of Gravitational Time Dilation
ER discloses that gravitational time dilation stems from projecting curved geodesics in ES to the axis of an observer. If an object accelerates in his proper space, it automatically decelerates in his proper time. In GR, gravitational time dilation is due to a curved spacetime. However, GR and ER do not compete against each other. GR describes an observer’s reality. ER describes the master reality. Of course, more studies will be necessary that address gravitation and gravitational effects in ER.
5.6. Solving the Mystery of the Cosmic Microwave Background
In this section, I outline an ER-based model of cosmology. There is no need to create ES. Euclidean space exists just like all numbers. For some reason, there was a Big Bang. In the GR-based Lambda-CDM model, the Big Bang occurred “everywhere” because space inflated from a singularity. In ER, the Big Bang can be localized: It injected a huge amount of energy into a non-inflating ES all at once at what I call “origin O”, the only natural reference point in ES. The Big Bang was a singularity in provided energy. Initially, all energy was receding radially from O at the speed . That is, the Big Bang also provided an overall radial momentum. Today, all energy is confined to a 4D hypersphere with the radius , and a lot of energy is confined to its 3D hypersurface, which is expanding at the speed . Interactions (such as the isotropic emission of photons or transversal acceleration) caused some energy to depart from its radial motion while keeping the speed .
Shortly after the Big Bang, energy was highly concentrated in ES. In the projection to any reality, a very hot and dense plasma was created. While this plasma was expanding, it cooled down. During plasma recombination, radiation was emitted, which we observe as cosmic microwave background (CMB) today [
17]. At temperatures of roughly 3,000 K, hydrogen atoms formed. The universe became more and more transparent for the CMB. In the Lambda-CDM model, this stage was reached 380,000 years “after” the Big Bang. In ER, these are 380,000 light years “away from” the Big Bang. If there was no cosmic inflation (see Sect. 5.9), the value “380,000” still needs to be recalculated in ER.
In
Figure 5, the axes
and
belong to observers on Earth (Earth is moving in
). A lot of energy moves radially: It keeps the radial momentum provided by the Big Bang. The CMB in
Figure 5 left moves transversally to
. It cannot move in
because it already moves in
at the speed
. Now we interpret three observations: (1) The CMB is nearly isotropic because it was created equally in the 3D space
of an observer’s reality. (2) The temperature of the CMB is very low because of a very high recession speed
(see Sect. 5.10) of all involved plasma particles. (3) We still observe the CMB today because it started moving at a very low speed
in a very dense medium.
5.7. Solving the Mystery of the Hubble–Lemaître law
The speed
at which a galaxy G recedes from Earth in 3D space today (
Figure 5 left) relates to their 3D distance
as
relates to the radius
of the 4D hypersphere.
where
is the Hubble parameter and
is the cosmic time elapsed since the Big Bang. Eq. (19) is the Hubble–Lemaître law [
18,
19]: The farther a galaxy, the faster it is receding from Earth. Cosmologists are already aware that
is a parameter rather than a constant. They are not yet aware of the 4D Euclidean geometry.
5.8. Solving the Mystery of the Flat Universe
For each observer, ES is projected orthogonally to his proper space and to his proper time. Thus, he experiences two seemingly discrete structures: a flat 3D space and time.
5.9. Solving the Mystery of Cosmic Inflation
It is assumed that a cosmic inflation of space in the early universe [
20,
21] caused the isotropic CMB, the flatness of the universe, and large-scale structures (inflated from quantum fluctuations). I just demonstrated that ER explains the first two observations. ER also explains the third observation if we assume that the impacts of quantum fluctuations have been expanding in ES at the speed
.
In ER, cosmic inflation is an obsolete concept.
5.10. Solving the Mystery of the Hubble Tension
There are several methods for calculating the Hubble constant
, where
is today’s radius of the 4D hypersphere. Up next, I explain why the calculated values do not match. I consider measurements of the CMB made with the
Planck space telescope and compare them with calibrated distance ladder techniques using the
Hubble space telescope. According to team A [
22], there is
. According to team B [
23], there is
.
Team B made great efforts to minimize the error margin by optimizing the distance measurements. I will show that misinterpreting the redshift data causes a systematic error in team B’s calculation of
. Let us assume that the value of team A is correct. We now simulate a supernova S’ at the distance of
. If this supernova occurred today (S in
Figure 5 right), we would calculate
where the redshift parameter
tells us how any wavelength
of the supernova’s light is either
passively stretched by an expanding space (team B), or how each
is redshifted by the Doppler effect of objects that are
actively receding in ES (ER-based model). In
Figure 5 right, there is an arc “past” when the supernova S’ occurred and an arc “present” when its light arrives on Earth. Because all energy is moving through ES at the speed
, Earth moved the same distance
, but in the axis
, when the light of S’ arrives. Thus, team B is receiving data from a time
when there was
and
.
Thus, team B is calculating
rather than
because it does not take Eq. (22) into account. For a short distance of
, Eq. (22) tells us that
deviates from
by only 0.009 percent. When plotting
versus
for long distances (50 Mpc, 100 Mpc, ..., 450 Mpc), the slope
is indeed 8 to 9 percent higher than
. I kindly ask team B to adjust the calculated speed
to today’s speed
by converting Eq. (22) to
Of course, team B is well aware of the fact that the supernova’s light was emitted in the past. But in the Lambda-CDM model, all that counts is the timespan during which the light is traveling from the supernova to Earth. Along the way, its wavelength is passively stretched by expanding space. The moment when the supernova occurred is irrelevant. In the ER-based model, that moment is relevant, but the timespan is irrelevant. The wavelength of the light is initially redshifted by the Doppler effect. During the journey to Earth, the parameter remains constant. It is tied up in some “package” when the supernova occurs and then sent to Earth, where it is measured. A 3D hypersurface (made of energy!) is expanding rather than space. In ER, expansion of space is an obsolete concept.
5.11. Solving the Mystery of Dark Energy
The systematic error made by team B can be fixed within the Lambda-CDM model by adjusting to today’s speed according to Eq. (25). Up next, I reveal a systematic error that is inherent in the Lambda-CDM model itself. It has to do with assuming an accelerating expansion of space, and it can only be fixed by replacing this model with the ER-based model of cosmology (unless we believe in dark energy). Today’s cosmologists favor an accelerating expansion of space because the calculated recession speeds deviate from the values predicted by Eq. (19). Deviations increase with distance and are attributed to an accelerating expansion of space, which would stretch each even more.
The ER-based model gives a simpler explanation for the deviations from the Hubble–Lemaître law:
from any past is higher than
. The older the redshift data, the more does
deviate from
, and the more does
deviate from
. If a supernova S (small white circle in
Figure 5 right) occurred today at the same distance of 400 Mpc as S’, the supernova S would recede slower (27,064 km/s) than S’ (29,748 km/s) just because
deviates from
. As long as we are not familiar with the 4D Euclidean geometry, higher redshifts are attributed to an accelerating expansion of space. Now that we know the 4D geometry, we can attribute higher redshifts to data from deeper pasts.
Perlmutter
et al [
24] and Riess
et al [
25] interpret data from high-redshift supernovae as an accelerating expansion of space. In ER, all redshifts stem from the Doppler effect of receding galaxies. Because the Lorentz factor is recovered in the projections from ES, the equations of SR remain valid in an observer’s reality. Thus, there is
where
is the observed redshift. While the supernova’s light moved
in the axis
, Earth moved the same
in the axis
(
Figure 5 right). Let
be the radius when the light was created. From Eq. (19) and
, we calculate
at the time
.
Figure 6 shows the distance modulus
of 16 low-redshift and 24 high-redshift supernovae versus
. Low-redshift data were published by Hamuy
et al [
26], high-redshift data by Perlmutter
et al [
24]. I considered those supernovae that had been studied by both [
24] and [
27]. For all 40 supernovae, I calculated
from Eq. (26). Then I used Eq. (27),
, and
to calculate
.
Linear regression yields the blue straight line in
Figure 6. The equation is given by
where
is a true constant. The offset “44” in
Figure 6 relates to
(see
Appendix B).
is lower than
in the Lambda-CDM model, but it is not the task of ER to recover a value that stems from a different spacetime. Only in ER do all 40 supernovae (including the high redshifts) fit very well to a straight line. Eq. (28) is the correct Hubble–Lemaître law. Space is not expanding, but energy is receding. The term “dark energy” [
28] was coined to explain an accelerating expansion of space. There is no expansion of space.
In ER, dark energy is an obsolete concept. It has never been observed anyway.
Thus, any expansion of space (uniform as well as accelerating) is only virtual. There is no accelerating expansion of the Universe even if the Nobel Prize in Physics 2011 was given “for the discovery of the accelerating expansion of the Universe through observations of distant supernovae”. This praise contains two misconceptions: (1) In the Lambda-CDM model, “Universe” also implies space, but space is not expanding at all. (2) There is receding energy, but it is moving uniformly in ES at the speed . In each observer’s reality, there only seems to be an accelerating expansion of space.
Radial momentum provided by the Big Bang drives all galaxies away from the origin O. They are driven by themselves rather than by dark energy. If the 3D hypersurface has always been expanding at the speed
, the time elapsed since the Big Bang is
, which is 20.4 billion years rather than 13.8 billion years [
29]. The new estimate would explain the existence of stars as old as 14.5 billion years [
30].
Table 1 compares two models of cosmology. Be aware that “Universe” (capitalized) in the Lambda-CDM model is not the same as “universe” in the ER-based model. In the next two sections, I will demonstrate that ER is compatible with QM. Since “quantum gravity” is meant to make GR compatible with QM, I conclude:
In ER, quantum gravity is an obsolete concept.
5.12. Solving the Mystery of the Wave–Particle Duality
The wave–particle duality was first discussed by Niels Bohr and Werner Heisenberg [
31] and has bothered physicists ever since. Electromagnetic waves are oscillations of an electromagnetic field, which propagate through an observer’s 3D space at the speed
. In some experiments, objects behave like waves. In other experiments, the same objects behave like matter (particles). Up next, I explain how one and the same object can be deemed both wave and matter. From an observer’s perspective, each object is wave or matter depending on its 3D speed. From its own perspective, it is always matter.
We will work with a generalized concept of energy (
Figure 7): In each observer’s reality, all objects are “wavematter” (electromagnetic wave packet and matter in one). If I observe a wavematter WM in my reality (external view, coordinate spacetime!), I deem it wave (if its speed is
), or matter (
), or either one (
). If I deem WM wave, it propagates in my axis
and it oscillates in my axes
and
(electromagnetic field). Propagating and oscillating occur in coordinate time
. However, WM has features of a particle, too: From its own perspective (internal view or in-flight view), the axis of its 4D motion disappears because of length contraction at the speed
. Thus, WM deems itself matter at rest. Be aware that “wavematter” is not just another word for the duality, but a generalized concept of energy that discloses
why there is a duality.
Only the SO(4) symmetry of ES tells us:
What I deem wave, deems itself matter. Einstein demonstrated that energy is equivalent to mass [
32]. This equivalence shows itself in the wave–particle duality: Because each wavematter is moving through ES at the speed
, its 4D motion is suppressed for itself. From its own perspective (in its reality), it “condenses” to mass in matter at rest. Waves (including the wave–particle duality and wave functions) are observer-related features. They appear only in an observer’s reality.
In a double-slit experiment, an observer detects coherent waves that pass through a double-slit and produce some pattern of interference on a screen. He deems all of these wavematters waves because he is not tracking through which slit each wavematter passes. Thus, he is an external observer. The photoelectric effect is quite different. Of course, one can externally witness how one photon releases one electron from a metal surface. But the physical effect (“Do I have enough energy to release one electron?”) is up to the photon’s view. Only if the photon’s energy exceeds the binding energy of an electron is this electron released. Thus, the photoelectric effect must be interpreted from the internal view of the photon. Here its view is crucial! It behaves like a particle.
The wave–particle duality is also observed in matter, such as electrons [
33]. According to my generalized concept of energy, electrons are wavematter, too. From the internal view (if I were the electron), the electron is a particle: Which slit will I pass through? From the external view (if I do not track single electrons), electrons behave like waves. Because I automatically track slow objects (slow for me), I deem all macroscopic wavematters matter. This argument justifies drawing solid rockets and celestial bodies.
5.13. Solving the Mystery of Quantum Entanglement
The term “entanglement” [
34] was coined by Erwin Schrödinger in his comment on the Einstein–Podolsky–Rosen paradox [
35]. These three physicists argued that QM would not provide a complete description of reality. Schrödinger’s word creation did not solve the paradox, but it demonstrates our difficulties in comprehending QM. John Bell proved that QM is not compatible with local hidden-variable theories [
36]. Several experiments have confirmed that quantum entanglement violates the concept of locality [
37,
38,
39]. Ever since has it been considered a non-local effect.
Now I show how to “untangle” entanglement
without the concept of non-locality. All we have to do is solve it in ES: The fourth dimension of space makes non-locality obsolete.
Figure 8 displays two wavematters that were created at once at a point P and are now moving away from each other in opposite directions
at the speed
. These two wavematters are entangled. If they are observed by a third wavematter moving in a direction other than
, they appear as two objects (external view). The third wavematter cannot understand how the other two wavematters communicate with each other in no time.
And here is the internal view: For each entangled wavematter in
Figure 8, the axis
disappears because of length contraction at the speed
. In their common (!) proper space spanned by
, either one of them deems itself at the very same position as its twin. From either perspective, they are one object, which has never been separated. This is how they communicate with each other in no time. The different positions in
are irrelevant: The twins stay together in their proper space even if their proper time flows in opposite directions. Entanglement occurs because observer and observed objects may experience different proper spaces and different 4D vectors
and
. ER also explains entanglement of electrons or atoms. They move at a speed
in my proper space, but in their axis
they move at the speed
. Any measurement tilts the axis of 4D motion of one twin and thus destroys the entanglement.
In ER, non-locality is an obsolete concept.
5.14. Solving the Mystery of Spontaneous Effects
In spontaneous emission, a photon is emitted by an excited atom. Prior to the emission, the photon’s energy was moving with the atom. After the emission, this energy is moving by itself. Today’s physics cannot explain how this energy is boosted to the speed in no time. In ES, both atom and photon are moving at the speed . So, there is no need to boost any energy to the speed . All it takes is energy from ES whose 4D motion “swings completely” (rotates by an angle of ) into an observer’s 3D space—and this energy speeds off at once. In absorption, a photon is spontaneously absorbed by an atom. Today’s physics cannot explain how the photon’s energy is slowed down to the atom’s speed in no time. In ES, both photon and atom are moving at the speed . So, there is no need to slow down any energy. Similar arguments apply to pair production and to annihilation. Spontaneous effects are another clue that energy is always moving through ES at the speed .
5.15. Solving the Mystery of the Baryon Asymmetry
According to the Lambda-CDM model, almost all matter in the Universe was created shortly after the Big Bang. Only then was the temperature high enough to enable the pair production of baryons and antibaryons. But the density was also very high so that baryons and antibaryons should have annihilated each other again. Since we do observe a lot more baryons than antibaryons today (known as the “baryon asymmetry”), it is assumed that an excess of baryons must have been produced in the early Universe [
40]. However, such an asymmetry in pair production has never been observed.
ER offers a unique solution to the baryon asymmetry: Since each wavematter deems itself matter, there was matter in ES immediately after the Big Bang. Today, there is much less antimatter than matter because antimatter is created in pair production only. One may ask: Why does wavematter not deem itself antimatter? The answer is that energy has two faces: wave and matter. Antimatter is not the opposite of matter; antimatter has the opposite electric charge. Antimatter seems to flow backward in time because proper time flows in opposite directions for any two wavematters created in pair production. As they move in opposite directions at the speed , they are automatically entangled.
6. Conclusions
ER solves mysteries that have not been solved in 100+ years or that have been solved by adding several customized concepts: cosmic inflation, expansion of space, dark energy, quantum gravity, and non-locality. These concepts are obsolete in ER, but they are needed in today’s physics to make cosmology and QM work. On the other hand, various kinds of waves (acoustic waves, electromagnetic waves, gravitational waves, wave functions) are facts in today’s physics, but they do not appear in ES because of its SO(4) symmetry. There is an observer’s reality (with waves) and the master reality (without waves). To this day, physics has focused on an observer’s reality. ER describes the master reality.
SR/GR have been confirmed many times over. Thus, they are considered two of the greatest achievements of physics. I showed that their performance is limited, and I suspect that this limitation causes today’s stagnation in physics. Physicists feel comfortable with SR/GR, but if we think of an observer’s reality as an oversized stage, ER tells us: The keys to cosmology and QM are beyond the curtain of this stage. Only in natural spacetime does nature disclose her secrets. The deflection of starlight is an impressive confirmation of GR. However, we must not think that an impressive confirmation of ER would still be missing. Observed facts (Hubble tension, entanglement) make it very likely that the master reality is real. ER improves our understanding of cosmology and QM.
It was a very wise decision to award Albert Einstein the Nobel Prize for his theory of the photoelectric effect [
41] rather than for SR/GR. ER penetrates to a deeper level. Einstein, one of the most brilliant physicists ever, did not realize that the fundamental metric chosen by nature is Euclidean. Einstein sacrificed absolute space and time. I sacrifice the absoluteness of waves and matter, but I restore absolute (cosmic) time. For the first time, mankind understands the nature of time: Time is distance covered in ES divided by the speed
. The human brain is able to imagine that we are moving through 4D space at the speed of light. With that said, conflicts of mankind become all so small.
Final remarks: (1) I ask you once more to be patient and fair. For instance, I have only briefly addressed gravitation. But I am confident that ER will improve our understanding of gravitation, too. We should not reject ER just because detailed studies about gravitation are still missing. (2) The beauty of ER is its symmetry. However, you will cherish ER only if you give yourself a little push by accepting that an observer’s reality is only a projection. We must not ask in physics: Why is it a projection? Nor must we ask: Why is it a probability function? (3) It looks like Plato was right with his
Allegory of the Cave [
42]: Mankind experiences a projection that is blurred because of QM. It is not by chance that the author of this paper is an experimental physicist. In SR and GR, spacetime is a construed concept, which is not suspicious to theorists. This paper lays the groundwork for ER. Everyone is welcome to join in! May ER get the broad acceptance that it deserves.
Funding
No funds, grants, or other support was received.
Data Availability Statement
Acknowledgements
I would like to thank Siegfried W. Stein for his contribution to Sect. 5.10 and for the Figs. 2, 4 (partly), and 5. After several unsuccessful submissions, he decided to withdraw his co-authorship. I am grateful to Matthias Bartelmann, Dirk Rischke, and Andreas Wipf for some valuable comments. In particular, I thank all editors and reviewers for the precious time that they spent on my manuscript. Some comments show how difficult it is to oppose the mainstream: “Unscholarly research.” “Fake science.” “Publishing is for experts only!” “Nothing but elementary mathematics.” arXiv.org temporarily suspended my submission privileges.
Conflicts of Interest
The author has no competing interests to declare.
Appendix A
All data displayed in
Figure 6 including their uncertainties.
Col. 1: IAU name assigned to the supernova.
Col. 2: Redshift
according to [
24].
Col. 3: Uncertainty in
according to [
24].
Col. 4: Distance modulus
according to [
27].
Col. 5: Uncertainty in
according to [
27].
Col. 6: Distance in parsec calculated from .
Col. 7: calculated from Eq. (26).
Col. 8: calculated from Eq. (27).
SN |
|
|
|
|
|
|
|
1990O |
0.030 |
0.002 |
35.90 |
0.20 |
1.514E8 |
0.0296 |
0.0299 |
1990af |
0.050 |
0.002 |
36.84 |
0.21 |
2.333E8 |
0.0488 |
0.0496 |
1992P |
0.026 |
0.002 |
35.64 |
0.20 |
1.343E8 |
0.0257 |
0.0259 |
1992ae |
0.075 |
0.002 |
37.77 |
0.19 |
3.581E8 |
0.0722 |
0.0741 |
1992ag |
0.026 |
0.002 |
35.06 |
0.24 |
1.028E8 |
0.0257 |
0.0259 |
1992al |
0.014 |
0.002 |
34.12 |
0.25 |
6.668E7 |
0.0139 |
0.0140 |
1992aq |
0.101 |
0.002 |
38.73 |
0.20 |
5.572E8 |
0.0959 |
0.0998 |
1992bc |
0.020 |
0.002 |
34.96 |
0.22 |
9.817E7 |
0.0198 |
0.0199 |
1992bg |
0.036 |
0.002 |
36.17 |
0.19 |
1.714E8 |
0.0354 |
0.0358 |
1992bh |
0.045 |
0.002 |
36.97 |
0.18 |
2.477E8 |
0.0440 |
0.0448 |
1992bl |
0.043 |
0.002 |
36.53 |
0.19 |
2.023E8 |
0.0421 |
0.0427 |
1992bo |
0.018 |
0.002 |
34.70 |
0.23 |
8.710E7 |
0.0178 |
0.0179 |
1992bp |
0.079 |
0.002 |
37.94 |
0.18 |
3.873E8 |
0.0759 |
0.0780 |
1992br |
0.088 |
0.002 |
38.07 |
0.28 |
4.111E8 |
0.0841 |
0.0866 |
1992bs |
0.063 |
0.002 |
37.67 |
0.19 |
3.420E8 |
0.0610 |
0.0625 |
1993B |
0.071 |
0.002 |
37.78 |
0.19 |
3.597E8 |
0.0685 |
0.0703 |
|
|
|
|
|
|
|
|
1995ar |
0.465 |
0.005 |
42.81 |
0.22 |
3.648E9 |
0.3643 |
0.4896 |
1995as |
0.498 |
0.001 |
43.21 |
0.24 |
4.385E9 |
0.3835 |
0.5540 |
1995aw |
0.400 |
0.030 |
42.04 |
0.19 |
2.559E9 |
0.3243 |
0.3953 |
1995ax |
0.615 |
0.001 |
42.85 |
0.23 |
3.715E9 |
0.4457 |
0.6029 |
1995ay |
0.480 |
0.001 |
42.37 |
0.20 |
2.979E9 |
0.3731 |
0.4717 |
1995ba |
0.388 |
0.001 |
42.07 |
0.19 |
2.594E9 |
0.3166 |
0.3871 |
1996cf |
0.570 |
0.010 |
42.77 |
0.19 |
3.581E9 |
0.4228 |
0.5647 |
1996cg |
0.490 |
0.010 |
42.58 |
0.19 |
3.281E9 |
0.3789 |
0.4922 |
1996ci |
0.495 |
0.001 |
42.25 |
0.19 |
2.818E9 |
0.3818 |
0.4759 |
1996cl |
0.828 |
0.001 |
43.96 |
0.46 |
6.194E9 |
0.5393 |
0.9540 |
1996cm |
0.450 |
0.010 |
42.58 |
0.19 |
3.281E9 |
0.3554 |
0.4617 |
1997F |
0.580 |
0.001 |
43.04 |
0.21 |
4.055E9 |
0.4280 |
0.5982 |
1997H |
0.526 |
0.001 |
42.56 |
0.18 |
3.251E9 |
0.3992 |
0.5172 |
1997I |
0.172 |
0.001 |
39.79 |
0.18 |
9.078E8 |
0.1574 |
0.1681 |
1997N |
0.180 |
0.001 |
39.98 |
0.18 |
9.908E8 |
0.1640 |
0.1763 |
1997P |
0.472 |
0.001 |
42.46 |
0.19 |
3.105E9 |
0.3684 |
0.4710 |
1997Q |
0.430 |
0.010 |
41.99 |
0.18 |
2.500E9 |
0.3432 |
0.4162 |
1997R |
0.657 |
0.001 |
43.27 |
0.20 |
4.508E9 |
0.4660 |
0.6816 |
1997ac |
0.320 |
0.010 |
41.45 |
0.18 |
1.950E9 |
0.2707 |
0.3136 |
1997af |
0.579 |
0.001 |
42.86 |
0.19 |
3.733E9 |
0.4275 |
0.5792 |
1997ai |
0.450 |
0.010 |
42.10 |
0.23 |
2.630E9 |
0.3554 |
0.4358 |
1997aj |
0.581 |
0.001 |
42.63 |
0.19 |
3.357E9 |
0.4285 |
0.5606 |
1997am |
0.416 |
0.001 |
42.10 |
0.19 |
2.630E9 |
0.3345 |
0.4102 |
1997ap |
0.830 |
0.010 |
43.85 |
0.19 |
5.888E9 |
0.5401 |
0.9205 |
Appendix B
Estimation of .
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Figure 1.
Minkowski diagram and ES diagram for two clocks “r” (red) and “b” (blue). Left: SR describes the reality of just one clock each (here: of “r”). “b” is slow with respect to “r” in . Right: ER describes the realities of “r” and of “b” at once (holistic view). “b” is slow with respect to “r” in .
Figure 1.
Minkowski diagram and ES diagram for two clocks “r” (red) and “b” (blue). Left: SR describes the reality of just one clock each (here: of “r”). “b” is slow with respect to “r” in . Right: ER describes the realities of “r” and of “b” at once (holistic view). “b” is slow with respect to “r” in .
Figure 2.
ES diagrams and 3D projections for two rockets “r” (red) and “b” (blue). All axes are in Ls (light seconds). Top left and right: In ES, both rockets are moving at the speed , but in different directions. Bottom left: Projection to the 3D space of observer R. Rocket “b” recedes from “r” at the 3D speed . Rocket “b” contracts to . Bottom right: Projection to the 3D space of observer B. Rocket “r” recedes from “b” at the 3D speed . Rocket “r” contracts to .
Figure 2.
ES diagrams and 3D projections for two rockets “r” (red) and “b” (blue). All axes are in Ls (light seconds). Top left and right: In ES, both rockets are moving at the speed , but in different directions. Bottom left: Projection to the 3D space of observer R. Rocket “b” recedes from “r” at the 3D speed . Rocket “b” contracts to . Bottom right: Projection to the 3D space of observer B. Rocket “r” recedes from “b” at the 3D speed . Rocket “r” contracts to .
Figure 3.
ES diagram for two clocks “r” (red) and “b” (blue). Clock “r” and Earth are moving in the axis of “r” at the speed . Clock “b” accelerates in the axis of “r” towards Earth.
Figure 3.
ES diagram for two clocks “r” (red) and “b” (blue). Clock “r” and Earth are moving in the axis of “r” at the speed . Clock “b” accelerates in the axis of “r” towards Earth.
Figure 4.
Graphical solutions to three geometric paradoxes. Left: A rocket moves along a guide wire. In 3D space, the guide wire remains within the rocket. Center: An observer in a rocket’s tip tries to detect the reflection of a light pulse. Between two snapshots (0–1 or 1–2), rocket, mirror, and light pulse move 0.5 Ls in ES. In 3D space, the light pulse is reflected back to the observer. Right: Earth revolves around the sun. In 3D space, the sun remains in the orbital plane of Earth.
Figure 4.
Graphical solutions to three geometric paradoxes. Left: A rocket moves along a guide wire. In 3D space, the guide wire remains within the rocket. Center: An observer in a rocket’s tip tries to detect the reflection of a light pulse. Between two snapshots (0–1 or 1–2), rocket, mirror, and light pulse move 0.5 Ls in ES. In 3D space, the light pulse is reflected back to the observer. Right: Earth revolves around the sun. In 3D space, the sun remains in the orbital plane of Earth.
Figure 5.
ES diagrams and 3D projections for solving the mysteries 5.6, 5.7, and 5.10. The displayed circular arcs are part of a 3D hypersurface, which is expanding in ES at the speed . Left: The CMB was created in the past and started moving at a speed . The galaxy G is receding from Earth today at the speed . Right: A supernova S’ occurred in the past when the radius of the hypersurface was smaller than today’s radius . It occurred at the distance of from Earth. If a supernova S occurs today at the same distance , it recedes slower than S’.
Figure 5.
ES diagrams and 3D projections for solving the mysteries 5.6, 5.7, and 5.10. The displayed circular arcs are part of a 3D hypersurface, which is expanding in ES at the speed . Left: The CMB was created in the past and started moving at a speed . The galaxy G is receding from Earth today at the speed . Right: A supernova S’ occurred in the past when the radius of the hypersurface was smaller than today’s radius . It occurred at the distance of from Earth. If a supernova S occurs today at the same distance , it recedes slower than S’.
Figure 6.
Hubble diagram for 40 Type Ia supernovae. The horizontal axis displays adjusted speeds. All data including their uncertainties are listed in the
Appendix A.
Figure 6.
Hubble diagram for 40 Type Ia supernovae. The horizontal axis displays adjusted speeds. All data including their uncertainties are listed in the
Appendix A.
Figure 7.
Concept of wavematter. Artwork illustrating how one and the same object can be deemed both wave and matter. If I observe a wavematter (external view), it comes in four orthogonal dimensions: propagation, electric field, magnetic field, and coordinate time. I deem it wave or matter depending on its 3D speed. Each wavematter deems itself matter at rest (internal view).
Figure 7.
Concept of wavematter. Artwork illustrating how one and the same object can be deemed both wave and matter. If I observe a wavematter (external view), it comes in four orthogonal dimensions: propagation, electric field, magnetic field, and coordinate time. I deem it wave or matter depending on its 3D speed. Each wavematter deems itself matter at rest (internal view).
Figure 8.
Entanglement in 4D ES. For each displayed wavematter, the axis disappears because of length contraction. It deems its twin and itself one object (internal view). For a third wavematter moving in a direction other than , the twins appear as two objects (external view).
Figure 8.
Entanglement in 4D ES. For each displayed wavematter, the axis disappears because of length contraction. It deems its twin and itself one object (internal view). For a third wavematter moving in a direction other than , the twins appear as two objects (external view).
Table 1.
Comparing the Lambda-CDM model with the ER-based model of cosmology.
Table 1.
Comparing the Lambda-CDM model with the ER-based model of cosmology.
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