Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Propagation of quantum correlations after a quench in the Mott-insulator
  regime of the Bose-Hubbard model   We study a quantum quench in the Bose-Hubbard model where the tunneling rate
$J$ is suddenly switched from zero to a finite value in the Mott regime. In
order to solve the many-body quantum dynamics far from equlibrium, we consider
the reduced density matrices for a finite number (one, two, three, etc.) of
lattice sites and split them up into on-site density operators, i.e., the mean
field, plus two-point and three-point correlations etc. Neglecting three-point
and higher correlations, we are able to numerically simulate the time-evolution
of the few-site density matrices and the two-point quantum correlations (e.g.,
their effective light-cone structure) for a comparably large number ${\cal
O}(10^3)$ of lattice sites.

6
The categories of this paper are: astro-ph
7
The categories of this paper are: hep-th
8
The categories of this paper are: hep-ex
17
The categories of this paper are: q-fin
21
The categories of this paper are: adap-org
4
The categories of this paper are: cond-mat
3
The categories of this paper are: physics
5
The categories of this paper are: gr-qc
2
The categories of this paper are: math
34
The categories of this paper are: chem-ph
35
The categories of this paper are: mtrl-th
10
The categories of this paper are: q-bio
29
The categories of this paper are: funct-an
36
The categories of this paper are: cmp-lg
33
The categories of this paper are: plasm-ph
37
The categories of this paper are: supr-con