scholarly journals Faster than Light: Again on the Lorentz Transformations

2016 ◽  
Vol 8 (6) ◽  
pp. 17 ◽  
Author(s):  
Carmine Cataldo
Keyword(s):  
Special Relativity ◽  
Empirical Evidence ◽  
Spatial Dimension ◽  
Lorentz Transformations ◽  
Mass Energy ◽  
Formal Validity ◽  
Energy Equivalence ◽  
Faster Than Light

<p class="1Body">The Lorentz transformations can be considered, without any doubt whatsoever, as the backbone of the theory of Special Relativity. Nonetheless, both the conventional derivation of the transformations and the meaning commonly assigned to them have been often savagely criticized, to the extent that, despite an alleged empirical evidence, the whole Special Relativity, in several occasions, has been brought into question. This paper is finalized to more thoroughly discuss a line of reasoning, elsewhere used in order to carry out an alternative deduction of the mass – energy equivalence, that may lead, amongst other things, towards the assignment of a new meaning to the Lorentz transformations, without any loss of formal validity. The transformations can be alternatively deduced once assumed some noteworthy hypotheses concerning our Universe, among which the existence of at least a further spatial dimension stands out. It is fundamental to underline that time is supposed as being absolute.</p>

Matter-Energy Equivalence

2020 ◽  
Vol 234 (10) ◽  
pp. 1567-1602
Author(s):  
Grit Kalies
Keyword(s):  
Special Relativity ◽  
Quantum Physics ◽  
Mass Energy ◽  
Conservation Of Energy ◽  
Energy Equivalent ◽  
Energy Equivalence ◽  
Laws Of Thermodynamics ◽  
Equivalent Property ◽  
Special Case ◽  
Matter Energy

AbstractOver the last two centuries, thermodynamics has contributed significantly to technical and industrial progress. According to phenomenological thermodynamics developed by Rudolf Clausius and Josiah Willard Gibbs, properties such as volume or interface represent energetic qualities of a real body. In the present work, the energy concepts of thermodynamics and special relativity are connected with each other. The plausibility of complete mass-energy equivalence is evaluated within the thermodynamic context. Einstein’s interpretation of the well-known equation E = mc2 as complete mass-energy equivalence results as a special case for idealized moving point masses – according to the assumptions of the theory of special relativity. It is shown that mass is one energy-equivalent property of matter, but not the only one, because complete mass-energy equivalence contradicts the principle of conservation of energy. Thermodynamics suggests matter-energy equivalence. In accordance with the two main laws of thermodynamics and corresponding with experimental facts, it forms the basis of an in-depth understanding of nature and provides impetus for the research in quantum physics, thermodynamics and astrophysics.

scholarly journals From General Relativity to A Simple-Harmonically Oscillating Universe, and Vice-Versa: A Review

2017 ◽  
Vol 9 (1) ◽  
pp. 86 ◽  
Author(s):  
Carmine Cataldo
Keyword(s):  
General Relativity ◽  
Cosmological Constant ◽  
Gravitational Constant ◽  
Spatial Dimension ◽  
Global Symmetry ◽  
Mass Energy ◽  
Fluid Equation ◽  
Energy Equivalence ◽  
Curvature Parameter ◽  
The Universe

In this paper two different lines of reasoning are followed in order to discuss a Universe that belongs to the so-called oscillatory class. In the first section, we start from the general writing of the first Friedmann – Lemaître equation. Taking into account mass – energy equivalence, the so-called fluid equation is immediately deduced, with the usual hypotheses of homogeneity and isotropy, once identified the evolution of the Universe with an isentropic process. Considering equal to zero the curvature parameter, and carrying out an opportune position concerning the so-called cosmological constant, we obtain an oscillating class, to which a simple-harmonically oscillating Universe evidently belongs. In the second section, we start from a simple-harmonically oscillating Universe, hypothesized globally flat and characterized by at least a further spatial dimension. Once defined the density, taking into account a global symmetry elsewhere postulated, we carry out a simple but noteworthy position concerning the gravitational constant. Then, once established the dependence between pressure and density, we deduce, by means of simple mathematical passages, the equations of Friedmann – Lemaître, without using Einstein’s Relativity.

An analogy between electromagnetic and internal waves

2019 ◽  
Vol 485 (4) ◽  
pp. 428-433
Author(s):  
V. G. Baydulov ◽  
P. A. Lesovskiy
Keyword(s):  
Angular Momentum ◽  
Conservation Laws ◽  
Internal Wave ◽  
Special Relativity ◽  
Internal Waves ◽  
Maxwell Equations ◽  
Wave Equations ◽  
Lagrange Function ◽  
Lorentz Transformations ◽  
Symmetry Transformations

For the symmetry group of internal-wave equations, the mechanical content of invariants and symmetry transformations is determined. The performed comparison makes it possible to construct expressions for analogs of momentum, angular momentum, energy, Lorentz transformations, and other characteristics of special relativity and electro-dynamics. The expressions for the Lagrange function are defined, and the conservation laws are derived. An analogy is drawn both in the case of the absence of sources and currents in the Maxwell equations and in their presence.

scholarly journals Retraction Note: Mass–Energy Equivalence Extension onto a Superfluid Quantum Vacuum

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Amrit Srečko Šorli
Keyword(s):  
Quantum Vacuum ◽  
Mass Energy ◽  
Link Type ◽  
Energy Equivalence

Editor's Note: this Article has been retracted; the Retraction Note is available at https://doi.org/10.1038/s41598-020-80949-z.

The Ultimate Sophistication of Special Theory of Relativity

2021 ◽  
Vol 11 (3) ◽  
pp. 43-49
Author(s):  
Hamdoon A. Khan ◽  
Keyword(s):  
Special Relativity ◽  
Special Theory ◽  
Mathematical Approach ◽  
Theory Of Relativity ◽  
Special Theory Of Relativity ◽  
The Real ◽  
The Past ◽  
The One ◽  
The Universe ◽  
Faster Than Light

With the consideration of the light which carries the photon particles, the Lorentz transformation was constructed with an impressive mathematical approach. But the generalization of that equation for all the velocities of the universe is direct enforcement on other things not to travel faster than light. It has created serious issues in every scientific research that was done in the last century based on the special theory of relativity. This paper replaces the velocity of light with some other velocities and shows us the possible consequences and highlights the issues of special relativity. If I travel through my past or future and was able to see another me there, who would be the real Hamdoon I or the one I see there in the past or future! If the real one is only me, the one I saw, is not me, so, I could not travel through my or someone else's past or future. Therefore, no one can travel through time. If both of us are the same, can the key of personal identity be duplicated or be separated into two or more parts? These are some of the fundamental philosophical arguments that annihilate the concept of time travel which is one of the sequels of special relativity.

scholarly journals SPECIAL RELATIVITY AND SUPERLUMINAL MOTIONS: A DISCUSSION OF SOME RECENT EXPERIMENTS

2000 ◽  
Vol 15 (18) ◽  
pp. 2793-2812 ◽  
Author(s):  
ERASMO RECAMI ◽  
FLAVIO FONTANA ◽  
ROBERTO GARAVAGLIA
Keyword(s):  
Special Relativity ◽  
Group Velocity ◽  
Maxwell Equations ◽  
Evanescent Waves ◽  
Experimental Results ◽  
Relativistic Causality ◽  
Causal Paradox ◽  
Faster Than Light

Some experiments, performed at Berkeley, Cologne, Florence, Vienna, Orsay and Rennes led to the claim that something seems to travel with a group velocity larger than the speed c of light in vacuum. Various other experimental results seem to point in the same direction: For instance, localized wavelet-type solutions of Maxwell equations have been found, both theoretically and experimentally, that travel with Superluminal speed. Even muonic and electronic neutrinos — it has been proposed — might be "tachyons," since their square mass appears to be negative. With regard to the first-mentioned experiments, it was very recently claimed by Guenter Nimtz that those results with evanescent waves or "tunneling photons" — implying Superluminal signal and impulse transmission — violate Einstein causality. In this note, on the contrary, we want to stress that all such results do not place relativistic causality in jeopardy, even if they refer to actual tachyonic motions: In fact, special relativity can cope even with Superluminal objects and waves. For instance, it is possible (at least in microphysics) to solve also the known causal paradoxes, devised for "faster than light" motion, even if this is not widely recognized. Here we show, in detail and rigorously, how to solve the oldest causal paradox, originally proposed by Tolman, which is the kernel of many further tachyon paradoxes. The key to the solution is a careful application of tachyon mechanics, as it unambiguously follows from special relativity.

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