Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Asymmetric Diamond Ising--Hubbard Chain with Attraction   The ground state and thermodynamic properties of an asymmetric diamond
Ising--Hubbard chain with the on-site electron-electron attraction has been
considered. The problem can be solved exactly using the decoration-iteration
transformation. In the case of the antiferromagnetic Ising interaction, the
influence of this attraction on the ground state and the temperature
dependences of the magnetization, magnetic susceptibility, and specific heat
has been studied.

7
The categories of this paper are: hep-th
11
The categories of this paper are: hep-lat
18
The categories of this paper are: econ
31
The categories of this paper are: ao-sci
21
The categories of this paper are: adap-org
35
The categories of this paper are: mtrl-th
1
The categories of this paper are: cs
0
The categories of this paper are: hep-ph
24
The categories of this paper are: dg-ga
22
The categories of this paper are: chao-dyn
29
The categories of this paper are: funct-an
30
The categories of this paper are: q-alg
19
The categories of this paper are: eess
17
The categories of this paper are: q-fin
6
The categories of this paper are: astro-ph
36
The categories of this paper are: cmp-lg