Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A way to solve BCS-type pairing model   We propose a way to solve BCS-type pairing model by to exactly solve its
spin-analogy in the subspace. The advantages of our method are to avoid to
directly deal with the approximate procedure and to transfer an exponentially
complicated problem to a polynomial problem. Moreover, it builds the
theoretical foundation of quantum simulation of pairing model and can be used
to check the precision of quantum simulation. It is also helpful to understand
the many-body quantum theory.

22
The categories of this paper are: chao-dyn
24
The categories of this paper are: dg-ga
18
The categories of this paper are: econ
14
The categories of this paper are: math-ph
15
The categories of this paper are: nucl-ex
6
The categories of this paper are: astro-ph
21
The categories of this paper are: adap-org
0
The categories of this paper are: hep-ph
32
The categories of this paper are: atom-ph
37
The categories of this paper are: supr-con
31
The categories of this paper are: ao-sci
28
The categories of this paper are: alg-geom
9
The categories of this paper are: nlin
12
The categories of this paper are: nucl-th
34
The categories of this paper are: chem-ph
1
The categories of this paper are: cs