1996/04/30 by H. Lu, H. Lü, Sudipta Mukherji +4 · 13 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Brane cosmology #Cosmology and Gravitation Theories #Dilaton #Entropy (arrow of time) #Ideal gas #Mathematical physics #Physics #Quantum Electrodynamics and Casimir Effect #Quantum mechanics #String field theory #String theory #Worldsheet #hep-th
paper · pdf · doi:10.1016/s0370-2693(96)01280-4
published in Physics Letters B 389(2), 248-254 (Elsevier BV) · Latex, 12 pages, no figures, minor changes
arxiv created 1996/09/18 · openalex publication_date 1996/12/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
It has recently been shown that for certain classical non-dilatonic p-branes, the entropy and temperature satisfy the ideal-gas relation S∼ Tp in the near-extremal regime. We extend these results to cases where the dilaton is non-vanishing, but nevertheless remains finite on the horizon in the extremal limit, showing that the ideal-gas relation is again satisfied. At the classical level, however, this relation does break down if the dilaton diverges on the horizon. We argue that such a divergence indicates the breakdown of the validity of the classical approximation, and that by taking string and worldsheet loop corrections into account, the validity of the entropy/temperature relation may be extended to include these cases. This opens up the possibility of giving a microscopic interpretation of the entropy for all near-extremal p-branes.