The non-invariant time and Lorentz-like transformations by Boris Čulina

Subjects: “…the invariance of the speed of light…”
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Calculation of the same Lorentz factor using the opposite approach by Wu Wang

“…According to this theory, the speed of light is variable and motion is absolute. The Lorentz factor can be calculated using an absolute inertial coordinate system that converts the absolute inertial coordinate system in space B to the movement coordinate system in space A. …”
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Quantum correlations and artificial intelligence by L. B. Boldyreva, E. Yu. Belova

“…The benefits of using quantum correlations in such process include: high degree of information protection both on the physical level (electric and magnetic noise does not affect quantum correlations) and on the level of confidentiality preservation of information transmitted (any external interference results in data corruption without information disclosure); the possibility of full automation of information transmission process; the process is dissipation free (which follows from that the quantum correlations are performed between the quantum obj ects described by the same wave function); high speed of information transmission (higher than the speed of light). In this case the special relativity postulate concerning the speed of light is not violated, because it relates to inertial systems only; however, quantum correlation due to being dissipation free is an inertialess process (which follows from the well-known, experimentally-verified relationship between mass m and energy E: E = mc2, where с is the speed of light). …”
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Mass-Energy Equivalence derived from Newtonian mechanics by Chinnaraji Annamalai, Antonio Marcos de Oliveira Siqueira

“… In the theory of special relativity, the Einstein’s relativistic mechanics is concerned with the motion of particles whose velocities approach the speed of light, but not equal to the speed of massless particle. …”
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Quantum Speed Limit for Relativistic Spin-0 and Spin-1 Bosons on Commutative and Noncommutative Planes by Kang Wang, Yu-Fei Zhang, Qing Wang, Zheng-Wen Long, Jian Jing

“…However, due to the noncommutativity, the average speeds of the wave packets on noncommutative plane will exceed the speed of light in vacuum provided the intensity of the magnetic field is strong enough. …”
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Fundamental charges for dual-unitary circuits by Tom Holden-Dye, Lluis Masanes, Arijeet Pal

“…This dual-unitarity restricts the dynamics of local operators in these circuits: the support of any such operator must grow at the effective speed of light of the system, along one or both of the edges of a causal light cone set by the geometry of the circuit. …”
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In-Process Quality Inspection of Rolling Element Bearings Based on the Measurement of Microelastic Deformation of Outer Ring by Kuosheng Jiang, Lianghe Li, Liubang Han, Shuai Gou

“…A testing machine with low shaft speed and light radial load condition is generally used to test the dynamic quality of bearings, which avoids creating any potential damages to testing bearings. …”
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The Euclidean model of space and time, and the wave nature of matter by Radovan Machotka

“…The EMST offers a unified description of all particles of matter as waves moving through four-dimensional Euclidean space at the speed of light. Unlike the usual description in three dimensions, where the group and phase velocities of a particle differ, in four-dimensional space the wave and the associated particle can be treated as a single object. …”
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Linear stability of a time-dependent, spherically symmetric background in beyond Horndeski theory and the speed of gravity waves by S. Mironov, M. Sharov, V. Volkova

“…In particular, we demonstrate that the class of beyond Horndeski theories, which satisfy the equality of gravity waves’ speed to the speed of light over a cosmological background, feature gravity waves propagating at luminal speeds above a time-dependent inhomogeneous background as well.…”
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Transient bifurcation induced rocket acceleration leading to a relativistic bulk medium induced by designed high-intensity lasers by Ryutaro Matsui, Yasuaki Kishimoto

“…By exploring a different function of plasma regulated by nonlinear waves and their transient bifurcations, we propose a boosting scheme for an object consisting of pure solid hydrogen medium irradiated by spatiotemporally designed high-intensity lasers to nearly the speed of light. This is achieved by two processes. One is the slow process via the formation of the shocklike structure in the medium and subsequent adiabatic compression exceeding 20 times the solid density to a width narrower than the local Debye length. …”
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Recent Progress on the Description of Relativistic Spin: Vector Model of Spinning Particle and Rotating Body with Gravimagnetic Moment in General Relativity by Alexei A. Deriglazov, Walberto Guzmán Ramírez

“…We describe a number of applications and show how the vector model clarifies some issues presented in theoretical description of a relativistic spin: (A) one-particle relativistic quantum mechanics with positive energies and its relation with the Dirac equation and with relativistic Zitterbewegung; (B) spin-induced noncommutativity and the problem of covariant formalism; (C) three-dimensional acceleration consistent with coordinate-independence of the speed of light in general relativity and rainbow geometry seen by spinning particle; (D) paradoxical behavior of the Mathisson-Papapetrou-Tulczyjew-Dixon equations of a rotating body in ultrarelativistic limit, and equations with improved behavior.…”
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On the five base quantities of nature and SI (The International System of Units) by Kaptay G.

“…The five base quantities are re-defined in this paper by connecting them to five fundamental constants of nature (the most accurately known frequency of the hydrogen atom, the speed of light, the Planck constant, the Boltzmann constant and the elementary charge) with their numerical values fixed in accordance with their CODATA 2006 values (to be improved by further experiments).…”
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Ultrarelativistic Spinning Particle and a Rotating Body in External Fields by Alexei A. Deriglazov, Walberto Guzmán Ramírez

“…If we use the usual special-relativity notions for time and distance, the maximum speed of the particle with anomalous magnetic moment in an electromagnetic field is different from the speed of light. This can be corrected assuming that the three-dimensional geometry should be defined with respect to an effective metric induced by spin-field interaction.…”
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Below the Schwinger critical magnetic field value, quantum vacuum and gamma-ray bursts delay by Iver H. Brevik, Moshe M. Chaichian, Anca Tureanu

“…In this case, in the region B<Bcrit, we show that interesting effects appear, among them the Cherenkov radiation and the reduction in the speed of light. The latter effects appear due to the quantum vacuum mimicking a medium. …”
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