Newtonian mechanics has established the limits of speeds, starting from the rest to an infinite speed. The Special Theory of Relativity (SR) has set these limits as being zero and speed of light c. The Special Symmetrical Relativity (SSR) postulates the existence of V as being the unattainable minimum limit of speed and accepts c as the unattainable upper limit of speed for particles. The limit V obeys the same invariance of c with respect to the kinematic aspect. It has a value of 4.53 × 10−14m/s. It can be obtained theoretically by many ways, by including relations involving only the fundamental constants. So the minimum speed V belongs to the select group of the fundamental constants of nature.
Much more clarifications could be provided for the origin of V, which is necessary for a deeper understanding of SSR. We can not ignore the fact that V represents a hypothetical gravitational speed of the electron in the first (fundamental) orbit of the Bohr‘s Hydrogen atom (this important detail is being firstly announced here and it will be rigorously demonstrated in a forthcoming publication). The hypothetical gravitational speed in the fundamental orbit of the Hydrogen atom should be understood as being the velocity calculated only due to the interaction between the masses of the proton and electron without considering the interaction force between its charges, which is 40 orders of magnitude higher than the gravitational force.
Now we introduce a background temperature in the spacetime of SSR so that we build a Deformed Special Symmetrical Relativity (DSSR) by connecting the dynamics of the particles in SSR to the temperature of the Cosmic Background Radiation (CBR). So we are able to obtain a function c(T) with which we can trace a true panorama of the evolution of the Universe starting from the Big Bang until its total extinction. Thus, we are able to investigate such dependence of c and also of V (since they are closely related) with respect to the CBR temperature. The universe cooled from the highest temperature 1032K (the Planck temperature TP that corresponds to c) that generated the inflationary period until reaching the final temperature of a too-rapid accelerated final expansion.
The evolution of the expanding universe until the present time when we have a soft accelerated expansion associated with a tiny positive value of the cosmological constant connected to a CBR of 2.73K will continue until approaching its final minimum temperature Tmin of about 3.28 × 10−12K – Tmin corresponds to the minimum vibration V – when a very rapid accelerated expansion (the final inflationary period) will govern again at the end of the universe, thus leading to a Big Rip of the spacetime tissue. This DSSR theory leads to the so-called Cosmology of Completeness.
The Cosmology of Completeness reveals how the speed of light decreases rapidly from a too high value (an infinite value at TP ) to its current value during the first infinitesimals of the time of the Big Bang. This occurred
before the beginning of the inflationary period, which was theorized by Alan Guth for the purpose of solving the
horizon problem (background isotropy). Basically, the horizon problem refers to the remarkable homogeneity of the Universe, which was guaranteed because of its extremely rapid expansion (inflationary period) with a speed that was much higher than c. This led to a universe whose radius increased by 50 orders of magnitude in a surprisingly small interval of time.
Joo Magueijo et al proposed the theory so-called Variation of the Speed of Light (VSL) as a supposed solution for the horizon problem. They tried to overthrow the inflationary model in the following way: “If there was a speed of light much higher than its current value c exactly during the interval of time when the inflation occurred and also after this period, the puzzle of homogeneity would be easily solved, since the higher speed of light could connect the distant points of the space in order to justify the quasi-isotropic CBR”.
However, by means of the theory so-called True Variation of the Speed of Light (TVSL) given by DSSR theory, it was rigorously demonstrated that the current value of the speed light (c) had already been reached and practically became stabilized just before the inflation period (Fig.1). Therefore, the claim to replace the inflationary period with a VSL should be decidedly forgotten.
Dark energy, which is expressed by means of the cosmological constant, plays an extremely important role in SSR theory. Anti-gravity and gravity fight each other throughout the existence of the Universe. Hadronic matter and dark matter are responsible for a gravitational attraction while the dark energy produces anti-gravity.
At the end of the Universe, which is predicted to be around 20 billion years from the present time, the universe will suffer its ultimate inflation. It will be the final cataclysm. As one approaches Tmin, the speed of light will again increase vertiginously towards infinity (Fig.2), and therefore the energy of the vacuum will also diverge. Everything will happen in as little time as the Big Bang times. The fabric of spacetime will rip (Big Rip). It will be practically an infinite temperature that will be reinstalled again. Other universes (babies universes) will fatally re-emerge from the rags of smoking tissue reminiscent of the space-time of our old and then extinct Universe.
Only the Cosmology of Completeness from DSSR theory predicts the rapid ultimate inflation and death of
the Universe at an infinite temperature after a very rapid increase of Tmin due to the Big Rip, from where other
hot babies universes will arise and so on.
During the expansion of the Universe, it passed by a very special moment, i.e., an intermediary time when it was verified that the attractive gravitational potential (gravity) and the repulsive gravitational potential (antigravity) are equal, i.e., a region of phase transition (Fig.3) between gravity and anti-gravity. In this regime, the spacetime has assumed a Euclidean geometry, i.e., a flat space (null curvature).
The expanding Universe arose from an initial singularity condition when anti-gravity dominated in order to provide the initial inflation. According to the observations of 1998 (Perlmutter et al), the expansion of the current universe is accelerated. Thus, at the present time, the curvature of spacetime is slightly negative, but still very close to the flat geometry.
When we are confronted with such a situation in which gravity and antigravity are equal, we are led to the
idealization of a sui generis state of primordial vacuum, which is analogous to the ether proposed classically. It
is a typical Newtonian absolute space, which had to suffer a drastic disturbance, caused by an external agent, that gave rise to creation. The current understanding is that the quantum vacuum is in a state of permanent
excitation. The fluctuations to which it undergoes generate pairs of particles and anti-particles, which fill the
Universe with matter and anti-matter.
Even in the fundamental state of the quantum vacuum, it undergoes small fluctuations because of the zero-point energy, when there is still the creation of virtual particle pairs.
However, a completely flat time space like the surface of a serene lake without any fluctuation and from which no pairs of particles emerge can be effectively idealized: THE NEWTONIAN FLAT SPACE (Fig.4). We are bringing back old issues that the dialectical materialists were careful to have buried.
These findings are described in the article entitled Variation of the speed of light and a minimum speed in the scenario of an inflationary universe with accelerated expansion, recently published in the journal Physics of the Dark Universe (Physics of the Dark Universe 22 (2018) 127-136). This work was conducted by Cláudio Nassif Cruz and Fernando Antônio da Silva.
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