Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spin-1/2 XXZ diamond chain within the Jordan-Wigner fermionization
  approach   The spin-1/2 XXZ diamond chain is considered within the Jordan-Wigner
fermionization. The fermionized Hamiltonian contains the interacting terms
which are treated within the Hartree-Fock approximation. We obtain the
ground-state magnetization curve of the model for some particular cases and
compare the results with the exact diagonalization data for finite chains of 30
spins and known exact results. We also analyze the validity of the suggested
approximation.

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The categories of this paper are: hep-ph
23
The categories of this paper are: solv-int
32
The categories of this paper are: atom-ph
15
The categories of this paper are: nucl-ex
29
The categories of this paper are: funct-an
37
The categories of this paper are: supr-con
21
The categories of this paper are: adap-org
13
The categories of this paper are: quant-ph
19
The categories of this paper are: eess
24
The categories of this paper are: dg-ga
28
The categories of this paper are: alg-geom
26
The categories of this paper are: bayes-an
6
The categories of this paper are: astro-ph
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The categories of this paper are: cs
2
The categories of this paper are: math
25
The categories of this paper are: patt-sol