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

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

2008-11-25

arxiv.org/abs/0811.4074v3

Eur. Phys. J. C62:413-418, 2009

Physics

High Energy Physics

High Energy Physics - Theory

10 pages, no figures, comments are welcome; v2: references added and some typoes corrected, to appear in Euro.Phys.J.C; v3:a d

Scientific paper

10.1140/epjc/s10052-009-1044-9

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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