Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Enhancement of pairing in a boson-fermion model for coupled ladders   Motivated by the presence of various charge inhomogeneities in strongly
correlated systems of coupled ladders, a model of spatially separated bosonic
and fermionic degrees of freedom is numerically studied. In this model, bosonic
chains are connected to fermionic chains by two types of generalized Andreev
couplings. It is shown that for both types of couplings the long-distance
pairing correlations are enhanced. Near quarter filling, this effect is much
larger for the splitting of a pair in electrons which go to the two neighboring
fermionic chains than for a pair hopping process. It is argued that the pairing
enhancement is a result of the nearest neighbor Coulomb repulsion which tunes
the competition between pairing and charge ordering.

13
The categories of this paper are: quant-ph
7
The categories of this paper are: hep-th
15
The categories of this paper are: nucl-ex
29
The categories of this paper are: funct-an
22
The categories of this paper are: chao-dyn
24
The categories of this paper are: dg-ga
9
The categories of this paper are: nlin
16
The categories of this paper are: stat
17
The categories of this paper are: q-fin
14
The categories of this paper are: math-ph
6
The categories of this paper are: astro-ph
12
The categories of this paper are: nucl-th
27
The categories of this paper are: comp-gas
5
The categories of this paper are: gr-qc
8
The categories of this paper are: hep-ex
26
The categories of this paper are: bayes-an