Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Effective Potential Approach to Quark Ferromagnetization in High Density
  Quark Matter   A possibility of spontaneous magnetization in high density symmetric quark
matter is investigated using the NJL type effective model of QCD by means of an
effective potential with respect to an auxiliary field. It is shown that the
quark ferromagnetic condensate has non-vanishing value at high baryon density
due to the tensor-type four-point interaction between quarks.

8
The categories of this paper are: hep-ex
7
The categories of this paper are: hep-th
23
The categories of this paper are: solv-int
25
The categories of this paper are: patt-sol
37
The categories of this paper are: supr-con
26
The categories of this paper are: bayes-an
30
The categories of this paper are: q-alg
22
The categories of this paper are: chao-dyn
14
The categories of this paper are: math-ph
36
The categories of this paper are: cmp-lg
15
The categories of this paper are: nucl-ex
28
The categories of this paper are: alg-geom
34
The categories of this paper are: chem-ph
6
The categories of this paper are: astro-ph
32
The categories of this paper are: atom-ph
10
The categories of this paper are: q-bio