497 citations
- Nagoya UniversityJP10 papers
- National College of Technology, Wakayama CollegeJP6 papers
- National Institute of TechnologyJP6 papers
- Aichi University of EducationJP4 papers
- Miyagi University of EducationJP4 papers
- Rikkyo UniversityJP4 papers
- The University of TokyoJP4 papers
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Showing 2009Show all
3 papers · 1 filter
gr-qc2009★ 15 cited
To what extent is the entropy-area law universal ? -- Multi-horizon and multi-temperature spacetime may break the entropy-area law --
Hiromi Saida
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 gi…
gr-qc2009★ 21 cited
de Sitter thermodynamics in the canonical ensemble
Hiromi Saida
The existing thermodynamics of the cosmological horizon in de-Sitter spacetime is established in the micro-canonical ensemble, while thermodynamics of black hole horizons are estab…
gr-qc2009★ 151 cited
Mechanical First Law of Black Hole Spacetimes with Cosmological Constant and Its Application to Schwarzschild-de Sitter Spacetime
Miho Urano, Akira Tomimatsu, Hiromi Saida
The mechanical first law (MFL) of black hole spacetimes is a geometrical relation which relates variations of mass parameter and horizon area. While it is well known that the MFL o…