publication . Article . 2009

To What Extent Is the Entropy-Area Law Universal? : Multi-Horizon and Multi-Temperature Spacetime May Break the Entropy-Area Law(Astrophysics and Cosmology)

Hiromi, SAIDA; Department of Physics, Daido University;
Open Access English
  • Published: 25 Dec 2009 Journal: Progress of theoretical physics = Progress of theoretical physics, volume 122, issue 6, pages 1,515-1,552 (issn: 0033068x, Copyright policy)
It seems to be a common understanding at present that, once event horizons are in thermal equilibrium, the entropy-area law holds inevitably. However no rigorous verification is given to such a very strong universality of the law in multi-horizon spacetimes. Then, on the basis of thermodynamically consistent and rigorous discussion, this paper suggests an evidence of breakdown of entropy-area law for horizons in Schwarzschild-de Sitter spacetime, in which the temperatures of the horizons are different. The outline is as follows: We construct carefully two thermal equilibrium systems individually for black hole event horizon (BEH) and cosmological event horizon (...
arXiv: General Relativity and Quantum Cosmology
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Article . 2009
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