Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Entanglement thermodynamics   Entanglement entropy is a statistical entropy measuring information loss due
to coarse-graining corresponding to a spatial division of a system. In this
paper we construct a thermodynamics (entanglement thermodynamics) which
includes the entanglement entropy as the entropy variable, for a massless
scalar field in Minkowski, Schwarzschild and Reissner-Nordstr{\"o}m spacetimes
to understand the statistical origin of black-hole thermodynamics. It is shown
that the entanglement thermodynamics in Minkowski spacetime differs
significantly from black-hole thermodynamics. On the contrary, the entanglement
thermodynamics in Schwarzschild and Reissner-Nordstr{\"o}m spacetimes has close
relevance to black-hole thermodynamics.

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The categories of this paper are: hep-ph
8
The categories of this paper are: hep-ex
23
The categories of this paper are: solv-int
26
The categories of this paper are: bayes-an
13
The categories of this paper are: quant-ph
30
The categories of this paper are: q-alg
17
The categories of this paper are: q-fin
29
The categories of this paper are: funct-an
25
The categories of this paper are: patt-sol
33
The categories of this paper are: plasm-ph
12
The categories of this paper are: nucl-th
34
The categories of this paper are: chem-ph
19
The categories of this paper are: eess
15
The categories of this paper are: nucl-ex
1
The categories of this paper are: cs
11
The categories of this paper are: hep-lat