Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Entanglement entropy and conformal field theory   We review the conformal field theory approach to entanglement entropy. We
show how to apply these methods to the calculation of the entanglement entropy
of a single interval, and the generalization to different situations such as
finite size, systems with boundaries, and the case of several disjoint
intervals. We discuss the behaviour away from the critical point and the
spectrum of the reduced density matrix. Quantum quenches, as paradigms of
non-equilibrium situations, are also considered.

19
The categories of this paper are: eess
17
The categories of this paper are: q-fin
30
The categories of this paper are: q-alg
29
The categories of this paper are: funct-an
28
The categories of this paper are: alg-geom
11
The categories of this paper are: hep-lat
16
The categories of this paper are: stat
20
The categories of this paper are: acc-phys
35
The categories of this paper are: mtrl-th
10
The categories of this paper are: q-bio
33
The categories of this paper are: plasm-ph
26
The categories of this paper are: bayes-an
1
The categories of this paper are: cs
24
The categories of this paper are: dg-ga
9
The categories of this paper are: nlin
31
The categories of this paper are: ao-sci