Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spreading of correlations and entanglement after a quench in the
  one-dimensional Bose-Hubbard model   We investigate the spreading of information in a one-dimensional Bose-Hubbard
system after a sudden parameter change. In particular, we study the
time-evolution of correlations and entanglement following a quench. The
investigated quantities show a light-cone like evolution, i.e. the spreading
with a finite velocity. We discuss the relation of this veloctiy to other
characteristic velocities of the system, like the sound velocity. The
entanglement is investigated using two different measures, the von-Neuman
entropy and mutual information. Whereas the von-Neumann entropy grows rapidly
with time the mutual information between two small subsystems can as well
decrease after an initial increase. Additionally we show that the static von
Neuman entropy characterises the location of the quantum phase transition.

30
The categories of this paper are: q-alg
18
The categories of this paper are: econ
17
The categories of this paper are: q-fin
1
The categories of this paper are: cs
0
The categories of this paper are: hep-ph
26
The categories of this paper are: bayes-an
36
The categories of this paper are: cmp-lg
14
The categories of this paper are: math-ph
32
The categories of this paper are: atom-ph
9
The categories of this paper are: nlin
22
The categories of this paper are: chao-dyn
24
The categories of this paper are: dg-ga
27
The categories of this paper are: comp-gas
35
The categories of this paper are: mtrl-th
12
The categories of this paper are: nucl-th
15
The categories of this paper are: nucl-ex