Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Entanglement of indistinguishable particles as a probe for quantum phase
  transitions in the extended Hubbard model   We investigate the quantum phase transitions of the extended Hubbard model at
half-filling with periodic boundary conditions employing the entanglement of
particles, as opposed to the more traditional entanglement of modes. Our
results show that the entanglement has either discontinuities or local minima
at the critical points. We associate the discontinuities to first order
transitions, and the minima to second order ones. Thus we show that the
entanglement of particles can be used to derive the phase diagram, except for
the subtle transitions between the phases SDW-BOW, and the superconductor
phases TS-SS.

28
The categories of this paper are: alg-geom
18
The categories of this paper are: econ
19
The categories of this paper are: eess
14
The categories of this paper are: math-ph
10
The categories of this paper are: q-bio
35
The categories of this paper are: mtrl-th
3
The categories of this paper are: physics
20
The categories of this paper are: acc-phys
32
The categories of this paper are: atom-ph
29
The categories of this paper are: funct-an
23
The categories of this paper are: solv-int
2
The categories of this paper are: math
21
The categories of this paper are: adap-org
22
The categories of this paper are: chao-dyn
12
The categories of this paper are: nucl-th
11
The categories of this paper are: hep-lat