Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Observation of emergent photon in Monte Carlo simulation of exciton
  condensate   Using Monte Carlo simulation, we studied fractionalized phases in a model of
exciton bose condensate and found evidence for an emergent photon in a finite
size system. The fractionalized phase is a meta-stable Coulomb phase where an
emergent photon arises as a gapless collective excitation of the excitons. We
also studied a possibility of spiral* phase where fractionalization and long
range spiral order of the exciton condensate coexist.

16
The categories of this paper are: stat
5
The categories of this paper are: gr-qc
15
The categories of this paper are: nucl-ex
23
The categories of this paper are: solv-int
10
The categories of this paper are: q-bio
0
The categories of this paper are: hep-ph
36
The categories of this paper are: cmp-lg
6
The categories of this paper are: astro-ph
9
The categories of this paper are: nlin
30
The categories of this paper are: q-alg
33
The categories of this paper are: plasm-ph
18
The categories of this paper are: econ
27
The categories of this paper are: comp-gas
1
The categories of this paper are: cs
28
The categories of this paper are: alg-geom
26
The categories of this paper are: bayes-an