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Corrections to Hawking-like Radiation for a Friedmann-Robertson-Walker Universe

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arxiv 0811.4074 v3 pith:GQYV7PWW submitted 2008-11-25 hep-th astro-phgr-qc

Corrections to Hawking-like Radiation for a Friedmann-Robertson-Walker Universe

classification hep-th astro-phgr-qc
keywords areacorrectionsuniverseblackemphentropyfriedmann-robertson-walkerhawking-like
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Recently, a Hamilton-Jacobi method beyond semiclassical approximation in black hole physics was developed by \emph{Banerjee} and \emph{Majhi}\cite{beyond0}. In this paper, we generalize their analysis of black holes to the case of Friedmann-Robertson-Walker (FRW) universe. It is shown that all the higher order quantum corrections in the single particle action are proportional to the usual semiclassical contribution. The corrections to the Hawking-like temperature and entropy of apparent horizon for FRW universe are also obtained. In the corrected entropy, the area law involves logarithmic area correction together with the standard inverse power of area term.

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Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Modified Entropy from Action Principle

    gr-qc 2026-05 unverdicted novelty 5.0

    Authors add f(R, K) to the Einstein-Hilbert action, obtain higher-derivative-free modified Friedmann equations for flat FRW, and derive a general apparent-horizon entropy expression usable for multiple entropy models.