Upper bound for entropy in asymptotically de Sitter space-time

Kengo Maeda, Tatsuhiko Koike, Makoto Narita, Akihiro Ishibashi

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

We investigate the nature of asymptotically de Sitter space-times containing a black hole. We show that if the matter fields satisfy the dominant energy condition and cosmic censorship holds in the considered space-time, the area of the cosmological event horizon for an observer approaching a future timelike infinity does not decrease; i.e., the second law is satisfied. We also show under the same conditions that the total area of the black hole and the cosmological event horizon, a quarter of which is the total Bekenstein-Hawking entropy, is less than 12π/Λ, where Λ is the cosmological constant. The physical implications are also discussed.

Original languageEnglish
Pages (from-to)3503-3508
Number of pages6
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume57
Issue number6
Publication statusPublished - 1998 Mar 15
Externally publishedYes

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event horizon
entropy
infinity
energy

ASJC Scopus subject areas

  • Mathematical Physics
  • Physics and Astronomy(all)
  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

Cite this

Upper bound for entropy in asymptotically de Sitter space-time. / Maeda, Kengo; Koike, Tatsuhiko; Narita, Makoto; Ishibashi, Akihiro.

In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 57, No. 6, 15.03.1998, p. 3503-3508.

Research output: Contribution to journalArticle

Maeda, Kengo ; Koike, Tatsuhiko ; Narita, Makoto ; Ishibashi, Akihiro. / Upper bound for entropy in asymptotically de Sitter space-time. In: Physical Review D - Particles, Fields, Gravitation and Cosmology. 1998 ; Vol. 57, No. 6. pp. 3503-3508.
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