Negative Temperature for Negative Lapse Function

Research output: Contribution to journalArticleScientificpeer-review

Researchers

Research units

  • Landau Institute for Theoretical Physics

Abstract

Fermion dynamics distinguishes spacetimes having the same metric g μν , but different tetrads e μa , and in particular, it distinguishes a lapse with negative sign, N < 0 (M. Christodoulou, A. Riello, and C. Rovelli, Int. J. Mod. Phys. D 21, 1242014 (2012)). Here, we show that the quasiequilibrium thermodynamic state may exist, in which the region with N < 0 has negative local temperature T(r) < 0, while the global Tolman temperature T 0 remains positive. For bosons, only N 2 matters. However, if bosons are composite, they may inherit negative T(r) from the fermions, and thus they may distinguish the spacetimes with positive and negative lapse functions via thermodynamics.

Details

Original languageEnglish
Pages (from-to)8-11
Number of pages4
JournalJETP Letters
Volume109
Issue number1
Early online date1 Jan 2019
Publication statusPublished - 1 Jan 2019
MoE publication typeA1 Journal article-refereed

ID: 31262553