Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Phase diagram of Josephson junction arrays with capacitive disorder   We study the phase diagram at finite temperature of Josephson junction arrays
with capacitive disorder (i.e., random offset charges and/or random charging
energies): in the limit of large particle numbers per junction, this is a
remarkable physical realization of the disordered boson Hubbard model. By using
a mean-field approximation, we compute the average free energy and the equation
for the phase boundary line between the insulating and the superconducting
phase. We find that the Mott-insulating lobe structure disappears for large
variance ($\sigma \gtrsim e$) of the offset charges probability distribution.
Further, with nearest-neighbor interactions, the insulating lobe around $q=e$
is destroyed even for small values of $\sigma$. In the case of random charging
energies, until the variance of the distribution reaches some critical value
the superconducting phase increases in comparison to the situation in which all
self-capacitances are equal.

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The categories of this paper are: plasm-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: hep-ph
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The categories of this paper are: q-alg
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The categories of this paper are: chem-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: bayes-an
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The categories of this paper are: acc-phys
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The categories of this paper are: ao-sci
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The categories of this paper are: patt-sol
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The categories of this paper are: cmp-lg
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The categories of this paper are: stat
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The categories of this paper are: alg-geom
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The categories of this paper are: econ
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The categories of this paper are: math
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The categories of this paper are: funct-an