Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Localization of the Higgs mode at the superfluid-Mott glass transition   The amplitude (Higgs) mode near the two-dimensional superfluid-Mott glass
quantum phase transition is studied. We map the Bose-Hubbard Hamiltonian of
disordered interacting bosons onto an equivalent classical XY model in (2+1)
dimensions and compute the scalar susceptibility of the order parameter
amplitude via Monte Carlo simulation. Analytic continuation of the scalar
susceptibilities from imaginary to real frequency to obtain the spectral
densities is performed by a modified maximum entropy technique. Our results
show that the introduction of disorder into the system leads to unconventional
dynamical behavior of the Higgs mode that violates naive scaling,despite the
underlying thermodynamics of the transition being of conventional power-law
type. The computed spectral densities exhibit a broad, non-critical response
for all energies, and a momentum-independent dispersion for long-wavelengths,
indicating strong evidence for the localization of the Higgs mode for all
dilutions.

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The categories of this paper are: chao-dyn
7
The categories of this paper are: hep-th
30
The categories of this paper are: q-alg
34
The categories of this paper are: chem-ph
2
The categories of this paper are: math
21
The categories of this paper are: adap-org
33
The categories of this paper are: plasm-ph
26
The categories of this paper are: bayes-an
23
The categories of this paper are: solv-int
0
The categories of this paper are: hep-ph
11
The categories of this paper are: hep-lat
17
The categories of this paper are: q-fin
15
The categories of this paper are: nucl-ex
24
The categories of this paper are: dg-ga
16
The categories of this paper are: stat
32
The categories of this paper are: atom-ph