Special relativity ≈ Special relativity
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Test of Special Relativity Using a Fiber Network of Optical Clocks Open
Phase compensated optical fiber links enable high accuracy atomic clocks separated by thousands of kilometers to be compared with unprecedented statistical resolution. By searching for a daily variation of the frequency difference between …
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Numerical relativity simulation of GW150914 beyond general relativity Open
We produce the first astrophysically relevant numerical binary black hole gravitational waveform in a higher-curvature theory of gravity beyond general relativity. We simulate a system with parameters consistent with GW150914, the first LI…
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Conformal Methods in General Relativity Open
This book offers a systematic exposition of conformal methods and how they can be used to study the global properties of solutions to the equations of Einstein's theory of gravity. It shows that combining these ideas with differential geom…
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Black-hole kicks from numerical-relativity surrogate models Open
Binary black holes radiate linear momentum in gravitational waves as they merge. Recoils imparted to the black-hole remnant can reach thousands of km/s, thus ejecting black holes from their host galaxies. We exploit recent advances in grav…
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Photon Bunching in a Rotating Reference Frame Open
Although quantum physics is well understood in inertial reference frames (flat spacetime), a current challenge is the search for experimental evidence of nontrivial or unexpected behavior of quantum systems in noninertial frames. Here, we …
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Euclidean Model of Space and Time Open
The aim of this work is to show that the currently widely accepted geometrical model of space and time based on the works of Einstein and Minkowski is not unique. The work presents an alternative geometrical model of space and time, a mode…
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On the fragmentalist interpretation of special relativity Open
Fragmentalism was first introduced by Kit Fine in his ‘Tense and Reality’ (Modality and tense: philosophical papers, Oxford University Press, Oxford, pp 261–320, 2005). According to fragmentalism, reality is an inherently perspectival plac…
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Deformed relativity symmetries and the local structure of spacetime Open
A spacetime interpretation of deformed relativity symmetry groups was\nrecently proposed by resorting to Finslerian geometries, seen as the outcome of\na continuous limit endowed with first order corrections from the quantum\ngravity regim…
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Photon mass in very special relativity Open
In Very Special Relativity (VSR) a gauge invariant photon mass is allowed. We\nexplore some consequences of keeping this parameter not zero. VSR-Maxwell\nequations are presented. In addition, we show modifications to the Feynman\nrules kee…
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Visualizing relativity: The OpenRelativity project Open
We present OpenRelativity, an open-source toolkit to simulate effects of special relativity within the popular Unity game engine. Intended for game developers, educators, and anyone interested in physics, OpenRelativity can help people cre…
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Einstein’s 1905 Paper on E=mc2 Open
It is well-known that Einstein’s first paper on E=mc2 as published in the Annalen der Physik in 1905 is problematic in that it suffers from the error of circular reasoning. This means that it uses as one of its premises a statement which i…
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Very special conformal field theories and their holographic duals Open
Cohen and Glashow introduced the notion of very special relativity as viable\nspace-time symmetry of elementary particle physics. As a natural generalization\nof their idea, we study the subgroup of the conformal group, dubbed very\nspecia…
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Quantum Relativity: Variable Energy Density of Quantum Vacuum as the Origin of Mass, Gravity and the Quantum Behaviour Open
In Quantum Relativity, time and space are separated. Time is the numerical order of material changes, and space is the medium, in which these changes take place. Space has the origin in a three-dimensional quantum vacuum defined by fluctua…
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Lorentz covariance of the mass-polariton theory of light Open
In the mass-polariton (MP) theory of light formulated by us recently [Phys.\nRev. A 95, 063850 (2017)], light in a medium is described as a coupled state of\nthe field and matter. The key result of the MP theory is that the optical force\n…
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Kappa-deformations: historical developments and recent results Open
I shall recall in historical perspective some results from nineties and show further how $\kappa$-deformed symmetries and $\kappa$-Minkowski space inspired DSR (Doubly of Deformed Special Relativity) approach proposed after 2000. As very r…
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Assessment of the relativistic rotational transformations Open
Rotational transformations describe relativistic effects in rotating frames. There are four major kinematic rotational transformations: the Langevin metric; Post transformation; Franklin transformation; and the rotational form of the absol…
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Relativistic Light Sails Open
One proposed method for spacecraft to reach nearby stars is by accelerating sails using either solar radiation pressure or directed energy. This idea constitutes the thesis behind the Breakthrough Starshot project, which aims to accelerate…
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Thought experiment discriminating special relativity from preferred frame theories Open
In relativistic theories the effect of nonconservation of simultaneity can be separated from that of the Lorentz-Fitzgerald contraction. Since with absolute synchronization simultaneity is conserved, we show that a simple kinematic test ma…
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Lorentz Factor and Time Dilation on the Special Theory of Relativity Open
This paper presents the derivation of the Lorentz factor and time dilation used in the Einstein’s theory of special relativity.
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The Relativity of Indeterminacy Open
A long-standing tradition, largely present in both the physical and the philosophical literature, regards the advent of (special) relativity—with its block-universe picture—as the failure of any indeterministic program in physics. On the c…
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Explanation of What Time in Kinematics Is and Dispelling Myths Allegedly Stemming from the Special Theory of Relativity Open
One of the biggest unsolved problems in physics is explaining what time is. The paper explains what time is in kinematics theories. It has been proved that in the kinematics of Special Theory of Relativity (STR) and Special Theory of Ether…
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Constraints on the deformation scale of a geometry in the cotangent bundle Open
There are several studies proposing phenomenological consequences of a\ndeformation of special and general relativity. Here, we cast novel constraints\non the deformation parameter of a metric in the cotangent bundle accounting for\na curv…
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An Educational Reconstruction of Special Relativity Theory for Secondary Education Open
Einstein’s derivation of special relativity theory (SRT), based on hypothetical reasoning and thought experiments, is regarded as a prime example of physics theory development. In secondary education, the introduction of SRT could provide …
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Local Lorentz transformations and Thomas effect in general relativity Open
The tetrad method is used for an introduction of local Lorentz frames and a detailed analysis of local Lorentz transformations. A formulation of equations of motion in local Lorentz frames is based on the Pomeransky-Khriplovich gravitoelec…
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Did Schrödinger have other options? Open
Wave mechanics triumphed when Schrödinger published his now famous equation and showed how to describe hydrogen-like atoms using it. However, while looking for the right equation, Schrödinger first explored, but did not publish, the equati…
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Alternative Representation of Space and Time: Geometric Solution of Problems of Relativity Theory Open
Relevance. The relevance of the stated subject of this scientific research is due to the importance of theoretical issues of alternative representation of the categories of space and time from the point of view of developing geometric solu…
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Does a deformation of special relativity imply energy dependent photon time delays? Open
Theoretical arguments in favor of energy dependent photon time delays from a\nmodification of special relativity (SR) have met with recent gamma ray\nobservations that put severe constraints on the scale of such deviations. We\nreview the …
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The concept of a mechanical system for measuring the one-way speed of light Open
The work presents the concept of a device for the measurement of the one-way speed of light. The minimum parameters of this device have also been determined based on the Special Theory of Ether without transverse contraction. The Special T…
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Guest Editorial Special Cluster on Magnetless Nonreciprocity in Electromagnetics Open
status: Published
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The invisibility of time dilation Open
Recently, the physics education community has taken a keen interest in modernising physics education. However, while topics in modern physics have great potential to engage students, these topics are abstract and hard-to-visualise. Therefo…