Abstract
The interplay of black hole and cosmological horizons introduces distinctive thermodynamic behavior for deSitter black holes, including well-known upper bounds for the mass and entropy. We point to a new such feature, a Schottky peak in the heat capacity of Schwarzschild-deSitter (SdS) black holes. With this behavior in mind, we explore statistical models for the underlying quantum degrees of freedom of SdS holes. While a simple two-state spin model gives Schottky behavior, in order to capture the non-equilibrium nature of the SdS system we consider a system with a large number of non-interacting spins. We examine to what extent constrained states of this system reproduce the thermodynamic properties of the black hole. We also review results of a recent study of particle production in SdS spacetimes in light of the Schottky anomaly and our spin models.
Original language | English (US) |
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Article number | 054001 |
Journal | Classical and Quantum Gravity |
Volume | 37 |
Issue number | 5 |
Early online date | Feb 7 2020 |
DOIs | |
State | Published - Feb 7 2020 |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)