Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Corner contribution to the entanglement entropy of an O(3) quantum
  critical point in 2+1 dimensions   The entanglement entropy for a quantum critical system across a boundary with
a corner exhibits a sub-leading logarithmic scaling term with a scale-invariant
coefficient. Using a Numerical Linked Cluster Expansion, we calculate this
universal quantity for a square-lattice bilayer Heisenberg model at its quantum
critical point. We find, for this 2+1 dimensional O(3) universality class, that
it is thrice the value calculated previously for the Ising universality class.
This relation gives substantial evidence that this coefficient provides a
measure of the number of degrees of freedom of the theory, analogous to the
central charge in a 1+1 dimensional conformal field theory.

27
The categories of this paper are: comp-gas
21
The categories of this paper are: adap-org
33
The categories of this paper are: plasm-ph
19
The categories of this paper are: eess
3
The categories of this paper are: physics
15
The categories of this paper are: nucl-ex
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The categories of this paper are: chao-dyn
1
The categories of this paper are: cs
16
The categories of this paper are: stat
0
The categories of this paper are: hep-ph
12
The categories of this paper are: nucl-th
26
The categories of this paper are: bayes-an
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The categories of this paper are: q-alg
23
The categories of this paper are: solv-int
31
The categories of this paper are: ao-sci
2
The categories of this paper are: math