Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Superconductivity assisted by inter-layer pair hopping in multi-layered
  cuprates   In order to explore why the multi-layered cuprates have such high Tc's, we
have examined various inter-layer processes. Since the inter-layer one-electron
hopping has little effects on the band structure, we turn to the inter-layer
pair hopping. The superconductivity in a double-layer Hubbard model with and
without the inter-layer pair hopping, as studied by solving the Eliashberg
equation with the fluctuation exchange approximation, reveals that the
inter-layer pair hopping acts to increase the pairing interaction and the
self-energy simultaneously, but that the former effect supersedes the latter
and enhances the superconductivity. The inter-layer pair hopping considered
here is for off-site pairs, for which we discuss the effect of retaining SU(2)
symmetry, along with how the the sign of the pair hopping determines the
relative configuration of d-waves between the adjacent layers.

23
The categories of this paper are: solv-int
20
The categories of this paper are: acc-phys
37
The categories of this paper are: supr-con
35
The categories of this paper are: mtrl-th
6
The categories of this paper are: astro-ph
0
The categories of this paper are: hep-ph
31
The categories of this paper are: ao-sci
10
The categories of this paper are: q-bio
15
The categories of this paper are: nucl-ex
16
The categories of this paper are: stat
25
The categories of this paper are: patt-sol
5
The categories of this paper are: gr-qc
29
The categories of this paper are: funct-an
32
The categories of this paper are: atom-ph
13
The categories of this paper are: quant-ph
18
The categories of this paper are: econ