Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Unified BCS-like model of pairing and alpha-correlations   We construct a BCS-like model that combines nucleonic pairing correlations
and possible quartic correlations of alpha-type in a single variational wave
function and derive corresponding gap equations. In the approximation of large
logarithms typical for the BCS approach, we show that the system reveals two
possible types of a condensate which cannot coexist. If the alpha-type
condensate prevails at N=Z, the growth of the neutron excess will naturally
lead to the first order phase transition to the nucleon condensates.

22
The categories of this paper are: chao-dyn
10
The categories of this paper are: q-bio
37
The categories of this paper are: supr-con
6
The categories of this paper are: astro-ph
23
The categories of this paper are: solv-int
36
The categories of this paper are: cmp-lg
8
The categories of this paper are: hep-ex
29
The categories of this paper are: funct-an
19
The categories of this paper are: eess
7
The categories of this paper are: hep-th
24
The categories of this paper are: dg-ga
32
The categories of this paper are: atom-ph
21
The categories of this paper are: adap-org
18
The categories of this paper are: econ
17
The categories of this paper are: q-fin
11
The categories of this paper are: hep-lat