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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
exaly   +2 more sources

Hamiltonian formulation of general relativity and post-Newtonian dynamics of compact binaries

open access: yesLiving Reviews in Relativity, 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
Piotr Jaranowski
exaly   +2 more sources

Tests of General Relativity with Binary Black Holes from the second LIGO-Virgo Gravitational-Wave Transient Catalog [PDF]

open access: yes, 2020
Gravitational waves enable tests of general relativity in the highly dynamical and strong-field regime. Using events detected by LIGO-Virgo up to 1 October 2019, we evaluate the consistency of the data with predictions from the theory. We first establish
The Ligo Scientific Collaboration   +499 more
semanticscholar   +1 more source

Carroll Expansion of General Relativity [PDF]

open access: yesSciPost Physics, 2021
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.
Dennis Hansen   +3 more
semanticscholar   +1 more source

Interaction of the axionic dark matter, dynamic aether, spinor and gravity fields as an origin of oscillations of the fermion effective mass

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
In the framework of the Einstein–Dirac-axion-aether theory we consider the quartet of self-interacting cosmic fields, which includes the dynamic aether, presented by the unit timelike vector field, the axionic dark mater, described by the pseudoscalar ...
Alexander B. Balakin, Anna O. Efremova
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

New application of the Killing vector field formalism: modified periodic potential and two-level profiles of the axionic dark matter distribution

open access: yesEuropean Physical Journal C: Particles and Fields, 2020
We consider the structure of halos of the axionic dark matter, which surround massive relativistic objects with static spherically symmetric gravitational field and monopole-type magneto-electric fields.
Alexander B. Balakin, Dmitry E. Groshev
doaj   +1 more source

Motion of Charged Spinning Particles in a Unified Field

open access: yesAdvances in High Energy Physics, 2021
Using a geometry wider than Riemannian one, the parameterized absolute parallelism (PAP) geometry, we derived a new curve containing two parameters. In the context of the geometrization philosophy, this new curve can be used as a trajectory of charged ...
M. I. Wanas, Mona M. Kamal
doaj   +1 more source

A unifying physically meaningful relativistic action

open access: yesScientific Reports, 2022
The motion of an object under the influence of force fields and/or media is described by means of a world-line with least action in its influenced spacetime.
Yaakov Friedman
doaj   +1 more source

Energy conditions in general relativity and quantum field theory [PDF]

open access: yesClassical and quantum gravity, 2020
This review summarizes the current status of the energy conditions in general relativity and quantum field theory. We provide a historical review and a summary of technical results and applications, complemented with a few new derivations and discussions.
Eleni-Alexandra Kontou, Ko Sanders
semanticscholar   +1 more source

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