Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Thermodynamic properties of two-component fermionic atoms trapped in a
  two-dimensional optical lattice   We study the finite temperature properties of two-component fermionic atoms
trapped in a two-dimensional optical lattice. We apply the self-energy
functional approach to the two-dimensional Hubbard model with a harmonic
trapping potential, and systematically investigate the thermodynamic properties
of this system. We find that entropy and grand potential provide evidence of a
crossover between the Mott insulating and metallic phases at certain
temperatures. In addition, we find that entropy exhibits a cusp-like anomaly at
lower temperatures, suggesting a second or higher order antiferromagnetic
transition. We estimate the antiferromagnetic transition temperatures, and
clarify how the trapping potential affects this magnetic transition.

1
The categories of this paper are: cs
22
The categories of this paper are: chao-dyn
13
The categories of this paper are: quant-ph
12
The categories of this paper are: nucl-th
19
The categories of this paper are: eess
30
The categories of this paper are: q-alg
32
The categories of this paper are: atom-ph
20
The categories of this paper are: acc-phys
6
The categories of this paper are: astro-ph
18
The categories of this paper are: econ
24
The categories of this paper are: dg-ga
33
The categories of this paper are: plasm-ph
7
The categories of this paper are: hep-th
16
The categories of this paper are: stat
36
The categories of this paper are: cmp-lg
21
The categories of this paper are: adap-org