Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Testing for topological order in variational wavefunctions for Z(2) spin
  liquids   We determine the conditions under which a spin-liquid Mott insulator |0>
defined by a Gutzwiller projected BCS state at half-filling is Z(2)
fractionalized. We construct a trial vison [Z(2) vortex] state |V> by
projecting an (hc/2e) vortex threading the hole of a cylinder/torus and examine
its overlap with |0> using analytical and numerical calculations. We find that
generically the overlap vanishes in the thermodynamic limit, so the spin-liquid
is Z(2) fractionalized. We point out the relevance of these results to
numerical studies of Hubbard-like models and spin models which have been
recently reported to possess spin liquid phases. We also consider possible
implications for flux-trapping experiments that have tested for Z(2)
fractionalization in underdoped high temperature superconductors.

0
The categories of this paper are: hep-ph
33
The categories of this paper are: plasm-ph
27
The categories of this paper are: comp-gas
30
The categories of this paper are: q-alg
8
The categories of this paper are: hep-ex
35
The categories of this paper are: mtrl-th
25
The categories of this paper are: patt-sol
3
The categories of this paper are: physics
16
The categories of this paper are: stat
31
The categories of this paper are: ao-sci
32
The categories of this paper are: atom-ph
14
The categories of this paper are: math-ph
2
The categories of this paper are: math
19
The categories of this paper are: eess
15
The categories of this paper are: nucl-ex
24
The categories of this paper are: dg-ga