Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Variational Monte Carlo Study of a Spinless Fermion t-V Model on a
  Triangular Lattice: Formation of a Pinball Liquid   We analyze a model of spinless fermions on a triangular lattice at
half-filling interacting via strong nearest-neighbor repulsive interactions, V,
using the variational Monte Carlo simulation technique. The existence of
three-sublattice long-range order is confirmed by the finite-size scaling
analysis of the charge structural factor at V_c/t > 12. This ordered phase
shows characteristics expected for a so called "pinball liquid" state, which
has the spontaneous separation of fermionic degrees of freedom into coexisting
Wigner crystal-like charge order (pin) and a metal (ball). The pins are fixed
in order to maximize the kinetic energy gain of balls which move almost freely.
The Fermi surface is reconstructed at V=V_c and remains towards the strong
coupling limit. These features reminiscent of the strong correlation together
with the large value of V_c/t distinguishes the pinball liquid from the
conventional charge-density-wave.

22
The categories of this paper are: chao-dyn
15
The categories of this paper are: nucl-ex
23
The categories of this paper are: solv-int
14
The categories of this paper are: math-ph
7
The categories of this paper are: hep-th
28
The categories of this paper are: alg-geom
33
The categories of this paper are: plasm-ph
21
The categories of this paper are: adap-org
32
The categories of this paper are: atom-ph
20
The categories of this paper are: acc-phys
31
The categories of this paper are: ao-sci
18
The categories of this paper are: econ
29
The categories of this paper are: funct-an
16
The categories of this paper are: stat
19
The categories of this paper are: eess
10
The categories of this paper are: q-bio