Schottky anomaly of deSitter black holes

Jack Dinsmore, Patrick Draper, David Kastor, Yue Qiu, Jennie Traschen

Research output: Contribution to journalArticlepeer-review


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 languageEnglish (US)
Article number054001
JournalClassical and Quantum Gravity
Issue number5
StatePublished - Feb 7 2020

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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