Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Worm quantum Monte-Carlo study of phase diagram of extended
  Jaynes-Cummings-Hubbard model   Herein, we study the extended Jaynes-Cummings-Hubbard model mainly by the
large-scale worm quantum Monte-Carlo method to check whether or not a light
supersolid phase exists in various geometries, such as the one-dimensional
chain, square lattices and triangular lattices. To achieve our purpose, the
ground state phase diagrams are investigated. For the one-dimensional chain and
square lattices, a first-order transition occurs between the superfluid phase
and the solid phase and therefore there is no stable supersolid phase existing
in these geometries. Interestingly, soliton/beats of the local densities arise
if the chemical potential is adjusted in the finite-size chain. However, this
soliton-superfluid coexistence can not be considered as a supersolid in the
thermodynamic limit. Searching for a light supersolid, we also studied the
Jaynes-Cummings-Hubbard model on triangular lattices, and the phase diagrams
are obtained. Through measurement of the structural factor, momentum
distribution and superfluid stiffness for various system sizes, a supersolid
phase exists stably in the triangular lattices geometry and the regime of the
supersolid phase is smaller than that of the mean field results. The light
supersolid in the Jaynes-Cummings-Hubbard model is attractive because it has
superreliance, which is absent in the pure Bose-Hubbard model. We believe the
results in this paper could help search for new novel phases in cold-atom
experiments

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The categories of this paper are: stat
0
The categories of this paper are: hep-ph
7
The categories of this paper are: hep-th
12
The categories of this paper are: nucl-th
30
The categories of this paper are: q-alg
37
The categories of this paper are: supr-con
32
The categories of this paper are: atom-ph
6
The categories of this paper are: astro-ph
20
The categories of this paper are: acc-phys
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The categories of this paper are: funct-an
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The categories of this paper are: comp-gas
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The categories of this paper are: physics
2
The categories of this paper are: math
28
The categories of this paper are: alg-geom
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The categories of this paper are: hep-lat
36
The categories of this paper are: cmp-lg