Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Pair correlation functions in one-dimensional correlated-hopping models   We investigate ground-state properties of two correlated-hopping electron
models, the Hirsch and the Bariev model. Both models are of recent interest in
the context of hole superconductivity. Applying the Lanczos technique to small
clusters, we numerically determine the binding energy, the spin gaps,
correlation functions, and other properties for various values of the
bond-charge interaction parameter. Our results for small systems indicate that
pairing is favoured in a certain parameter range. However, in contrast to the
Bariev model, superconducting correlations are suppressed in the Hirsch model,
for a bond-charge repulsion larger than a critical value.

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The categories of this paper are: plasm-ph
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The categories of this paper are: stat
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The categories of this paper are: q-fin
26
The categories of this paper are: bayes-an
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The categories of this paper are: mtrl-th
19
The categories of this paper are: eess
9
The categories of this paper are: nlin
30
The categories of this paper are: q-alg
8
The categories of this paper are: hep-ex
2
The categories of this paper are: math
29
The categories of this paper are: funct-an
12
The categories of this paper are: nucl-th
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The categories of this paper are: q-bio
31
The categories of this paper are: ao-sci
1
The categories of this paper are: cs
0
The categories of this paper are: hep-ph