Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Exact Bond-Located Spin Ground State in the Hubbard Chain with
  Off-Diagonal Coulomb Interactions   We show the existence of an exact ground state in certain parameter regimes
of one-dimensional half-filled extended Hubbard model with site-off-diagonal
interactions. In this ground state, the bond-located spin correlation exhibits
a long-range order. In the case when the spin space is SU(2) symmetric, this
ground state degenerates with higher spin states including a fully
ferromagnetic state. We also discuss the relation between the exact
bond-ordered ground state and the critical bond-spin-density-wave phase.

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The categories of this paper are: q-fin
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The categories of this paper are: adap-org
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The categories of this paper are: math-ph
26
The categories of this paper are: bayes-an
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The categories of this paper are: stat
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The categories of this paper are: patt-sol
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The categories of this paper are: q-alg
1
The categories of this paper are: cs
11
The categories of this paper are: hep-lat
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The categories of this paper are: q-bio
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The categories of this paper are: plasm-ph
7
The categories of this paper are: hep-th
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The categories of this paper are: dg-ga
9
The categories of this paper are: nlin
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The categories of this paper are: cmp-lg
0
The categories of this paper are: hep-ph