Cosmology Due to Thermodynamics of Apparent Horizon
Sign Up to like & getrecommendations! Published in 2025 at "Annalen der Physik"
DOI: 10.1002/andp.202500204
Abstract: This study proposes new entropy of the apparent horizon Sh=(1/β)arctan(βSBH)$S_h=(1/\beta)\arctan (\beta S_{BH})$ , where SBH$S_{BH}$ is the Bekenstein–Hawking entropy. As parameter β→0$\beta \rightarrow 0$ one comes to the Bekenstein–Hawking entropy. This allows to consider the… read more here.
Keywords: thermodynamics; apparent horizon; due thermodynamics; cosmology ... See more keywords
Formation of singularity and apparent horizon for dissipative collapse in f(R, T) theory of gravity
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DOI: 10.1007/s10714-025-03379-0
Abstract: In this paper, we consider the spherically symmetric gravitational collapse of isotropic matter undergoing dissipation in the form of heat flux, with a generalized Vaidya exterior, in the context of f(R, T) gravity. Choosing f(R,T)=R+2λT\documentclass[12pt]{minimal}… read more here.
Keywords: singularity; apparent horizon; gravity; collapse ... See more keywords
Geometry near the apparent horizon
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DOI: 10.1103/physrevd.101.124053
Abstract: Trapped regions bounded by horizons are the defining features of black holes. However, formation of a singularity-free apparent horizon in finite time of a distant observer is consistent only with special states of geometry and… read more here.
Keywords: geometry near; black hole; physics; geometry ... See more keywords