Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Grand canonical ensembles in general relativity   We develop a formalism for general relativistic, grand canonical ensembles in
space-times with timelike Killing fields. Using that formalism we derive ideal
gas laws, and show how they depend on the geometry of the particular
space-times. A systematic method for calculating Newtonian limits is given for
a class of these space-times, which is illustrated for Kerr space-time. In
addition, we prove uniqueness of the infinite volume Gibbs measure, and absence
of phase transitions for a class of interaction potentials in anti-de Sitter
space-time.

13
The categories of this paper are: quant-ph
16
The categories of this paper are: stat
11
The categories of this paper are: hep-lat
4
The categories of this paper are: cond-mat
30
The categories of this paper are: q-alg
0
The categories of this paper are: hep-ph
23
The categories of this paper are: solv-int
10
The categories of this paper are: q-bio
3
The categories of this paper are: physics
37
The categories of this paper are: supr-con
35
The categories of this paper are: mtrl-th
20
The categories of this paper are: acc-phys
25
The categories of this paper are: patt-sol
7
The categories of this paper are: hep-th
36
The categories of this paper are: cmp-lg
9
The categories of this paper are: nlin