Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Antiferromagnetism and single-particle properties in the two-dimensional
  half-filled Hubbard model: Slater vs Mott-Heisenberg   We study antiferromagnetism and single-particle properties in the
two-dimensional half-filled Hubbard model at low temperature. Collective spin
fluctuations are governed by a non-linear sigma model that we derive from the
Hubbard model for any value of the Coulomb repulsion. As the Coulomb repulsion
increases, the ground state progressively evolves from a Slater to a
Mott-Heisenberg antiferromagnet. At finite temperature, we find a
metal-insulator transition between a pseudogap phase at weak coupling and a
Mott-Hubbard insulator at strong coupling.

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The categories of this paper are: hep-lat
31
The categories of this paper are: ao-sci
30
The categories of this paper are: q-alg
8
The categories of this paper are: hep-ex
21
The categories of this paper are: adap-org
28
The categories of this paper are: alg-geom
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The categories of this paper are: eess
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The categories of this paper are: econ
9
The categories of this paper are: nlin
23
The categories of this paper are: solv-int
5
The categories of this paper are: gr-qc
16
The categories of this paper are: stat
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The categories of this paper are: hep-th
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The categories of this paper are: nucl-ex
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The categories of this paper are: q-fin
35
The categories of this paper are: mtrl-th