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Testing general relativity in cosmology [PDF]

open access: yesLiving Reviews in Relativity, 2018
We review recent developments and results in testing general relativity (GR) at cosmological scales. The subject has witnessed rapid growth during the last two decades with the aim of addressing the question of cosmic acceleration and the dark energy ...
Mustapha Ishak
doaj   +4 more sources

Carroll Expansion of General Relativity [PDF]

open access: yesSciPost Physics, 2022
We study the small speed of light expansion of general relativity, utilizing the modern perspective on non-Lorentzian geometry. This is an expansion around the ultra-local Carroll limit, in which light cones close up. To this end, we first rewrite the
Dennis Hansen, Niels A. Obers, Gerben Oling, Benjamin T. Søgaard
doaj   +2 more sources

Coincident general relativity [PDF]

open access: yesPhysical Review D, 2018
5 ...
Jimenez, Jose Beltran   +2 more
openaire   +4 more sources

Landauer Principle and General Relativity [PDF]

open access: yesEntropy, 2020
We endeavour to illustrate the physical relevance of the Landauer principle applying it to different important issues concerning the theory of gravitation.
Luis Herrera
doaj   +2 more sources

Hamiltonian formulation of general relativity and post-Newtonian dynamics of compact binaries. [PDF]

open access: yesLiving Rev Relativ, 2018
Hamiltonian formalisms provide powerful tools for the computation of approximate analytic solutions of the Einstein field equations. The post-Newtonian computations of the explicit analytic dynamics and motion of compact binaries are discussed within the
Schäfer G, Jaranowski P.
europepmc   +2 more sources

Microscopic Origin of the Entropy of Black Holes in General Relativity [PDF]

open access: yesPhysical Review X, 2022
We construct an infinite family of microstates with geometric interiors for eternal black holes in general relativity with negative cosmological constant in any dimension.
V. Balasubramanian   +3 more
semanticscholar   +1 more source

Unimodular gravity vs general relativity: a status report [PDF]

open access: yesClassical and quantum gravity, 2022
Unimodular gravity (UG) is an alternative to general relativity (GR) which, however, is so closely related to the latter that one can wonder to what extent they are different.
R. Carballo-Rubio   +2 more
semanticscholar   +1 more source

Traversable Wormholes in General Relativity. [PDF]

open access: yesPhysical Review Letters, 2021
Blázquez-Salcedo et al. [Phys. Rev. Lett. 126, 101102 (2021)PRLTAO0031-900710.1103/PhysRevLett.126.101102] obtained asymptotically flat traversable wormhole solutions in the Einstein-Dirac-Maxwell theory without using phantom matter.
R. Konoplya, A. Zhidenko
semanticscholar   +1 more source

General Relativity and Philosophy [PDF]

open access: yesJournal of Philosophical Investigations, 2021
Is philosophy useful for physics? Many physicists and philosophers believe that it is; but there are those who challenge the usefulness of philosophy for science. Three major objections can be identified in their reasoning: 1.
Mohammad Ebrahim Maghsoudi   +1 more
doaj   +1 more source

Nonlocal extension of causal thermodynamics of the isotropic cosmic fluid

open access: yesPhysics Letters B, 2022
We establish the nonlocal generalization of the Israel-Stewart model for the relativistic causal thermodynamics of the cosmic fluid, which evolves in the homogeneous isotropic Universe.
Alexander B. Balakin, Alexei S. Ilin
doaj   +1 more source

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