Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Entanglement and quantum phase transition in the asymmetric Hubbard
  chain: density-matrix renormalization group calculations   We study the ground state quantum phase transition by means of entanglement
in the one-dimensional asymmetric Hubbard model with open boundary condition.
The local entanglement between the middle two sites and the rest of the system,
and the block entanglement between the left and right portions of the system,
are calculated using the density-matrix renormalization group (DMRG) method. We
find that the entanglement shows interesting scaling and singular behavior
around the phase transition line.

8
The categories of this paper are: hep-ex
9
The categories of this paper are: nlin
13
The categories of this paper are: quant-ph
32
The categories of this paper are: atom-ph
17
The categories of this paper are: q-fin
3
The categories of this paper are: physics
26
The categories of this paper are: bayes-an
10
The categories of this paper are: q-bio
22
The categories of this paper are: chao-dyn
33
The categories of this paper are: plasm-ph
37
The categories of this paper are: supr-con
1
The categories of this paper are: cs
19
The categories of this paper are: eess
25
The categories of this paper are: patt-sol
6
The categories of this paper are: astro-ph
36
The categories of this paper are: cmp-lg