Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: BCS-BEC model of high-Tc superconductivity in layered cuprates with
  unconventional pairing   High-Tc superconductivity in layered cuprates is described in a BCS-BEC
formalism with linearly-dispersive s- and d-wave Cooper pairs moving in
quasi-2D finite-width layers about the CuO_2 planes. This yields a closed
formula for Tc determined by the layer width, the Debye frequency, the pairing
energy, and the in-plane penetration depth. The new formula reasonably
reproduces empirical values of superconducting Tc's for seven different
compounds among the LSCO, YBCO, BSCCO and TBCCO layered cuprates.

6
The categories of this paper are: astro-ph
7
The categories of this paper are: hep-th
19
The categories of this paper are: eess
5
The categories of this paper are: gr-qc
18
The categories of this paper are: econ
10
The categories of this paper are: q-bio
27
The categories of this paper are: comp-gas
14
The categories of this paper are: math-ph
17
The categories of this paper are: q-fin
21
The categories of this paper are: adap-org
13
The categories of this paper are: quant-ph
3
The categories of this paper are: physics
26
The categories of this paper are: bayes-an
15
The categories of this paper are: nucl-ex
33
The categories of this paper are: plasm-ph
24
The categories of this paper are: dg-ga