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Precision cosmology with exact inhomogeneous solutions of general relativity: The Szekeres models [PDF]

open access: greenPhysical Review D
The exact Friedman solution to the field equations of General Relativity (GR) describing a homogeneous and isotropic universe together with its linear and higher-order perturbations are the theoretical roots of the current standard model of cosmology.
Marie-Noëlle Célérier
openalex   +4 more sources

Generalized teleparallel de Sitter geometries [PDF]

open access: yesEuropean Physical Journal C: Particles and Fields, 2023
Theories of gravity based on teleparallel geometries are characterized by the torsion, which is a function of the coframe, derivatives of the coframe, and a zero curvature and metric compatible spin-connection.
A. A. Coley   +3 more
doaj   +2 more sources

Exact Solutions for Oscillating Spheres in General Relativity [PDF]

open access: bronzeMonthly Notices of the Royal Astronomical Society, 1967
W. B. Bonnor, M. C. Faulkes
openalex   +3 more sources

A metric of Yukawa potential as an exact solution to the field equations of general relativity

open access: green, 1995
It is shown that, by defining a suitable energy momentum tensor, the field equations of general relativity admit a line element of Yukawa potential as an exact solution. It is also shown that matter that produces strong force may be negative, in which case there would be no Schwarzschild-like ...
Vu B Ho
openalex   +4 more sources

Black holes and non-perturbative gravitational waves in f(R) gravity

open access: yesEuropean Physical Journal C: Particles and Fields, 2023
Exact solutions of spherically symmetric black hole and gravitational wave are explored in f(R) gravity in arbitrary dimension. We find two exact solutions for the radiation and absorption of null dust.
Chunmei Liu, Hongsheng Zhang
doaj   +1 more source

Note on the asymptotic structure of Kerr-Schild form

open access: yesJournal of High Energy Physics, 2022
The Kerr-Schild form provides a natural way of realizing the classical double copy that relates exact solutions in general relativity to exact solutions in gauge theory. In this paper, we examine the asymptotic structure of Kerr-Schild form.
Pujian Mao, Weicheng Zhao
doaj   +1 more source

Collapsing dynamics of relativistic fluid in modified gravity admitting a conformal Killing vector

open access: yesEuropean Physical Journal C: Particles and Fields, 2023
The collapsing dynamics of relativistic fluid are explored in f(R) gravity in detailed systematic manner for the non-static spherically symmetric spacetime satisfying the equation of the conformal Killing vector.
Kazuharu Bamba   +4 more
doaj   +1 more source

Charged black hole and radiating solutions in entangled relativity

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
In this manuscript, we show that the external Schwarzschild metric can be a good approximation of exact black hole solutions of entangled relativity.
Olivier Minazzoli, Edison Santos
doaj   +1 more source

New Riccati equations for radiating matter

open access: yesEuropean Physical Journal C: Particles and Fields, 2022
The relationship between radiating stars in general relativity and Riccati equations is investigated for a general matter distribution including the electromagnetic field and the cosmological constant.
Noeleen Naidoo   +2 more
doaj   +1 more source

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