Robinson–Trautman solutions to Einstein’s equations
Sign Up to like & getrecommendations! Published in 2017 at "General Relativity and Gravitation"
DOI: 10.1007/s10714-017-2195-x
Abstract: Solutions to Einstein’s equations in the form of a Robinson–Trautman metric are presented. In particular, we derive a pure radiation solution which is non-stationary and involves a mass m, The resulting spacetime is of Petrov… read more here.
Keywords: trautman solutions; einstein equations; solutions einstein; robinson trautman ... See more keywords
From interstellar clouds to star-forming galaxies: universal processes?
Sign Up to like & getrecommendations! Published in 2018 at "Contemporary Physics"
DOI: 10.1080/00107514.2018.1501432
Abstract: rotation would give rise to a more general class of retrodictive solutions of the Einstein equations without a Big Bang and black holes without a singularity. Thus one might imagine that the Friedmann–Lemaitre models, or… read more here.
Keywords: cosmology; clouds star; physics; star forming ... See more keywords
The problem of characterising stationary data for the vacuum Einstein equations
Sign Up to like & getrecommendations! Published in 2017 at "Classical and Quantum Gravity"
DOI: 10.1088/1361-6382/aa59ac
Abstract: We take a step towards characterising stationary data for the vacuum Einstein equations, by finding a necessary condition on initial data for which the evolution is a solution of the vacuum equations admitting a Killing… read more here.
Keywords: characterising stationary; vacuum einstein; data vacuum; vacuum ... See more keywords
Quantum Einstein equations
Sign Up to like & getrecommendations! Published in 2020 at "Classical and Quantum Gravity"
DOI: 10.1088/1361-6382/ab92ed
Abstract: We derive the quantum Einstein equations (which are the quantum generalisation of the Einstein equations of classical gravity) from Bohmian quantum gravity. Bohmian quantum gravity is a non-classical geometrodynamics (in the ADM formalism) which describes… read more here.
Keywords: einstein equations; equations quantum; quantum gravity; quantum ... See more keywords
Fully constrained, high-resolution shock-capturing, formulation of the Einstein-fluid equations in 2+1 dimensions
Sign Up to like & getrecommendations! Published in 2021 at "Physical Review D"
DOI: 10.1103/physrevd.104.024061
Abstract: Four components of the axisymmetric Einstein equations in 2+1 dimensions with negative cosmological constant can be written as ∇aM = . . . and ∇aJ = . . . , where the dots stand for… read more here.
Keywords: resolution shock; formulation; einstein equations; fully constrained ... See more keywords
Gauging the scale invariance of Einstein equations: Weyl-invariant equations for gravity
Sign Up to like & getrecommendations! Published in 2024 at "Physical Review D"
DOI: 10.1103/physrevd.111.044050
Abstract: We derive a Weyl invariant equation for Gravity by gauging the global Weyl invariance of vacuum Einstein equations. The equation is linear in the curvature and a natural generalization of Einstein equations to Weyl geometry.… read more here.
Keywords: invariance; gravity; weyl invariant; einstein equations ... See more keywords
q-deformed Einstein equations from entropic force
Sign Up to like & getrecommendations! Published in 2018 at "International Journal of Modern Physics A"
DOI: 10.1142/s0217751x18502184
Abstract: In this study, we investigate the influences of fermionic q-deformation on the Einstein equations by taking into account of Verlinde’s entropic gravity approach and Strominger’s proposal on quantum black holes. According to Verlinde’s proposal, gravity… read more here.
Keywords: entropic force; deformed einstein; gravity; einstein equations ... See more keywords
Conformally flat traveling plane wave solutions of Einstein equations
Sign Up to like & getrecommendations! Published in 2019 at "International Journal of Geometric Methods in Modern Physics"
DOI: 10.1142/s0219887820500152
Abstract: We discuss conformally flat plane wave solutions of Einstein equations depending on the plane wave phase [Formula: see text], where [Formula: see text] is the conformal time. We show that ideal fluid Einstein equations and… read more here.
Keywords: plane; einstein equations; conformally flat; plane wave ... See more keywords