Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Effects of short-ranged interactions on the Kane-Mele model without
  discrete particle-hole symmetry   We study the effects of short-ranged interactions on the $Z_2$ topological
insulator phase, also known as the quantum spin Hall phase, in the Kane-Mele
model at half-filling with staggered potentials which explicitly breaks the
discrete particle-hole symmetry. Within Hartree-Fock mean-field analysis, we
conclude that the on-site repulsive interactions help stabilize the topological
phase (quantum spin Hall) against the staggered potentials by enlarging the
regime of the topological phase along the axis of the ratio of the staggered
potential strength and the spin-orbit coupling. In sharp contrast, the on-site
attractive interactions destabilize the topological phase. We also examine the
attractive interaction case by means of the unbiased determinant projector
quantum Monte Carlo and the results are qualitatively consistent with the
Hartree-Fock picture.

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The categories of this paper are: acc-phys
18
The categories of this paper are: econ
2
The categories of this paper are: math
22
The categories of this paper are: chao-dyn
12
The categories of this paper are: nucl-th
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The categories of this paper are: eess
31
The categories of this paper are: ao-sci
9
The categories of this paper are: nlin
37
The categories of this paper are: supr-con
16
The categories of this paper are: stat
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The categories of this paper are: patt-sol
26
The categories of this paper are: bayes-an
7
The categories of this paper are: hep-th
8
The categories of this paper are: hep-ex
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The categories of this paper are: adap-org
28
The categories of this paper are: alg-geom