Absence of curvature singularities in symmetric perfect fluid spacetimes in Einstein–Gauss–Bonnet Gravity
Sign Up to like & getrecommendations! Published in 2025 at "General Relativity and Gravitation"
DOI: 10.1007/s10714-025-03473-3
Abstract: In this paper we study the higher dimensional N>4\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\left( N > 4\right) $$\end{document} homogeneous and isotropic perfect fluid spacetimes in Einstein–Gauss–Bonnet (EGB) gravity. We solve the… read more here.
Keywords: fluid spacetimes; gravity; einstein gauss; perfect fluid ... See more keywords
Dynamics of a rigid body in a two-dimensional incompressible perfect fluid and the zero-radius limit
Sign Up to like & getrecommendations! Published in 2019 at "Science China Mathematics"
DOI: 10.1007/s11425-018-9505-8
Abstract: In this survey we report some recent results on the dynamics of a rigid body immersed in a two-dimensional incompressible perfect fluid, with an emphasis on the zero-radius limit. read more here.
Keywords: perfect fluid; incompressible perfect; dimensional incompressible; dynamics rigid ... See more keywords
Greybody factor for a rotating Bardeen black hole by perfect fluid dark matter
Sign Up to like & getrecommendations! Published in 2021 at "Annals of Physics"
DOI: 10.1016/j.aop.2021.168673
Abstract: In this paper, the greybody factor is studied analytically for a rotating regular Bardeen black hole surrounded by perfect fluid dark matter. Firstly, we examine the behavior of effective potential by using the radial equation… read more here.
Keywords: greybody factor; fluid dark; dark matter; perfect fluid ... See more keywords
Note on the fall of an axisymmetric body in a perfect fluid over a horizontal ramp
Sign Up to like & getrecommendations! Published in 2018 at "Comptes Rendus Mathematique"
DOI: 10.1016/j.crma.2018.10.001
Abstract: Abstract In this note, we consider the fall of an axisymmetric body in a perfect fluid over a ramp. It was shown in [12] that the possibility of a collision between the body and the… read more here.
Keywords: ramp; body perfect; perfect fluid; axisymmetric body ... See more keywords
Perfect fluid filled universe in odd dimensional pure Lovelock gravity
Sign Up to like & getrecommendations! Published in 2020 at "Physics of the Dark Universe"
DOI: 10.1016/j.dark.2020.100735
Abstract: Abstract It is well known that d = 2 N + 1 dimensional pure Lovelock metrics do not describe bounded distributions neither do they admit nontrivial vacuum solutions. On this basis it has been variously… read more here.
Keywords: fluid filled; perfect fluid; pure lovelock; dimensional pure ... See more keywords
Perfect fluid spacetimes and Yamabe solitons
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Mathematical Physics"
DOI: 10.1063/5.0033967
Abstract: This paper deals with the study of perfect fluid spacetimes. It is proven that a perfect fluid spacetime is Ricci recurrent if and only if the velocity vector field of perfect fluid spacetime is parallel… read more here.
Keywords: fluid; perfect fluid; yamabe solitons; vector field ... See more keywords
Geometry of noncompact static perfect fluid spacetime
Sign Up to like & getrecommendations! Published in 2025 at "Journal of Mathematical Physics"
DOI: 10.1063/5.0289773
Abstract: In this paper, we study the geometry of noncompact static perfect fluid spacetime. By using the Pohozaev–Schoen identity, we establish inequalities involving the inner and the boundary quantities for asymptotically flat and asymptotically hyperbolic static… read more here.
Keywords: perfect fluid; geometry noncompact; geometry; static perfect ... See more keywords
On the axisymmetric metric generated by a rotating perfect fluid with the vacuum boundary
Sign Up to like & getrecommendations! Published in 2020 at "Classical and Quantum Gravity"
DOI: 10.1088/1361-6382/abfed3
Abstract: We consider the equations for the coefficients of stationary rotating axisymmetric metrics governed by the Einstein–Euler equations, that is, the Einstein equations together with the energy–momentum tensor of a barotropic perfect fluid. Although the reduced… read more here.
Keywords: metric generated; system; perfect fluid; vacuum boundary ... See more keywords
Ultralight scalar dark matter versus nonadiabatic perfect fluid dark matter in pulsar timing
Sign Up to like & getrecommendations! Published in 2024 at "Physical Review D"
DOI: 10.1103/physrevd.111.064078
Abstract: Recent evidence for stochastic gravitational waves reported by pulsar timing array (PTA) collaborations might open a new window for studying cosmology and astrophysical phenomena. In addition to signals from gravitational waves, there is motivation to… read more here.
Keywords: dark matter; pulsar timing; matter; scalar dark ... See more keywords
Perfect Fluid Hydrodynamic Picture of Domain Wall Velocities at Strong Coupling.
Sign Up to like & getrecommendations! Published in 2022 at "Physical review letters"
DOI: 10.1103/physrevlett.129.081601
Abstract: We show that for a range of strongly coupled theories with a first order phase transition, the domain wall or bubble velocity can be expressed in a simple way in terms of a perfect fluid… read more here.
Keywords: perfect fluid; domain wall; fluid hydrodynamic; wall velocities ... See more keywords
Refined Thermodynamic Analysis of Perfect Fluid Dark Matter Black Holes in a Phantom Background
Sign Up to like & getrecommendations! Published in 2025 at "International Journal of Modern Physics A"
DOI: 10.1142/s0217751x25501027
Abstract: In this study, we examine the thermodynamics of black holes immersed in perfect fluid dark matter (PFDM) by employing the Misner-Sharp energy framework. We extend the analysis to include the thermal fluctuations of these black… read more here.
Keywords: fluid dark; dark matter; analysis; perfect fluid ... See more keywords