Articles with "equivalence principle" as a keyword



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Violation of the Equivalence Principle in Non-Hermitian Fermion Theory

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Published in 2018 at "Russian Physics Journal"

DOI: 10.1007/s11182-018-1545-9

Abstract: Consequences of the non-Hermitian expansion of the Dirac equation in which the mass term is written in the form m → m1 + γ5m2 are considered. It is shown that such procedure inevitably leads to… read more here.

Keywords: fermion; non hermitian; equivalence principle; violation ... See more keywords
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The Equivalence Principle in the Theory of Variable Rest Mass with Applications in Astrophysics

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Published in 2020 at "Russian Physics Journal"

DOI: 10.1007/s11182-020-02080-w

Abstract: A covariant equation of motion and energy of a body with variable rest mass with dark energy taken into account in the general theory of relativity is considered on the basis of the equivalence principle. read more here.

Keywords: equivalence principle; theory; variable rest; astrophysics ... See more keywords
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An optical perspective on the theory of relativity -Ⅰ: Basic concepts and the equivalence principle

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Published in 2020 at "Optik"

DOI: 10.1016/j.ijleo.2020.165686

Abstract: Abstract This article reviews the process by which Einstein founded the theory of relativity, considers Einstein's perspective on physics and examines the relationship between our new perspective and Einstein's perspective. The basic concepts involved in… read more here.

Keywords: theory relativity; equivalence principle; perspective; relativity ... See more keywords
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Quantum test of the equivalence principle for atoms in coherent superposition of internal energy states

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Published in 2017 at "Nature Communications"

DOI: 10.1038/ncomms15529

Abstract: The Einstein equivalence principle (EEP) has a central role in the understanding of gravity and space–time. In its weak form, or weak equivalence principle (WEP), it directly implies equivalence between inertial and gravitational mass. Verifying… read more here.

Keywords: equivalence principle; principle; coherent superposition; test ... See more keywords
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Constraining the Einstein equivalence principle with multi-wavelength observations of polarized blazars

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Published in 2020 at "Monthly Notices of the Royal Astronomical Society"

DOI: 10.1093/mnras/staa369

Abstract: In this paper, we present a novel method to test the Einstein's Equivalence Principle (EEP) using (simultaneous) multi-wavelength radio observations of polarized blazars. We analyze simultaneous multi-wavelength polarization observations of 3C 279 at 22, 43,… read more here.

Keywords: equivalence principle; polarized blazars; einstein equivalence; multi wavelength ... See more keywords
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Constraints on equivalence principle violation from gamma ray bursts

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Published in 2021 at "Physical Review D"

DOI: 10.1103/physrevd.104.084025

Abstract: D. J. Bartlett, ∗ D. Bergsdal, 3 H. Desmond, P. G. Ferreira, and J. Jasche Astrophysics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford, OX1 3RH, UK Particle and Astroparticle Physics, Department of Physics,… read more here.

Keywords: constraints equivalence; principle violation; physics; equivalence principle ... See more keywords
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New test of weak equivalence principle using polarized light from astrophysical events

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Published in 2017 at "Physical Review D"

DOI: 10.1103/physrevd.95.103004

Abstract: Einstein's weak equivalence principle (WEP) states that any freely falling, uncharged test particle follows the same identical trajectory independent of its internal structure and composition. Since the polarization of a photon is considered to be… read more here.

Keywords: equivalence principle; ensuremath gamma; ensuremath; weak equivalence ... See more keywords
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Lorentz-violating scalar Hamiltonian and the equivalence principle in a static metric

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Published in 2018 at "Physical Review D"

DOI: 10.1103/physrevd.98.035018

Abstract: In this paper, we obtain a nonrelativistic Hamiltonian from the Lorentz-violating (LV) scalar Lagrangian in the minimal SME. The Hamiltonian is obtained by two different methods. One is through the usual ansatz $\Phi(t,\vec{r})=e^{-imt}\Psi(t,\vec{r})$ applied to… read more here.

Keywords: violating scalar; equivalence principle; lorentz violating;
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Testing the gravitational weak equivalence principle in the standard model extension with binary pulsars

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Published in 2019 at "Physical Review D"

DOI: 10.1103/physrevd.99.084017

Abstract: The Standard-Model Extension provides a framework to systematically investigate possible violation of the Lorentz symmetry. Concerning gravity, the linearized version was extensively examined. We here cast the first set of experimental bounds on the nonlinear… read more here.

Keywords: gravitational weak; weak equivalence; model extension; equivalence principle ... See more keywords
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Precision test of the weak equivalence principle from gamma-ray burst polarization

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Published in 2019 at "Physical Review D"

DOI: 10.1103/physrevd.99.103012

Abstract: If the weak equivalence principle (WEP) is broken, the measured values of the parametrized post-Newtonian parameter. from photons with left- and right-handed circular polarizations should differ slightly, leading to the arrival-time difference of these two… read more here.

Keywords: ray burst; gamma; weak equivalence; equivalence principle ... See more keywords
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MICROSCOPE Mission: First Results of a Space Test of the Equivalence Principle.

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Published in 2017 at "Physical review letters"

DOI: 10.1103/physrevlett.119.231101

Abstract: According to the weak equivalence principle, all bodies should fall at the same rate in a gravitational field. The MICROSCOPE satellite, launched in April 2016, aims to test its validity at the 10^{-15} precision level,… read more here.

Keywords: equivalence principle; equivalence; microscope mission; mission first ... See more keywords