Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Ginzburg-Landau effective action approach to disordered Bose-Hubbard
  Model   We study the phase transition from Mott insulator (MI) to Bose glass (BG) of
a disordered Bose-Hubbard model within the framework of Ginzburg-Landau
effective action approach. By treating MI as unperturbed ground state and
performing a systematic expansion with respect to tunneling matrix element, we
extend such a field-theoretic method into the disordered lattice Bose systems.
To the lowest order, a second order phase transition is confirmed to happen
here and the corresponding phase boundary equation coincides with the previous
mean-field approximation result. Keeping all the terms second order in hopping
parameter, we obtain the beyond mean-field results of MI-BG phase boundary of
2D and 3D disordered Bose-Hubbard models. Our analytic predictions are in
agreement with recent semianalytic results.

26
The categories of this paper are: bayes-an
0
The categories of this paper are: hep-ph
29
The categories of this paper are: funct-an
36
The categories of this paper are: cmp-lg
3
The categories of this paper are: physics
18
The categories of this paper are: econ
24
The categories of this paper are: dg-ga
31
The categories of this paper are: ao-sci
19
The categories of this paper are: eess
7
The categories of this paper are: hep-th
37
The categories of this paper are: supr-con
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The categories of this paper are: solv-int
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The categories of this paper are: comp-gas
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The categories of this paper are: astro-ph
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The categories of this paper are: nlin
8
The categories of this paper are: hep-ex