Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quark Antiscreening at Strong Magnetic Field and Inverse Magnetic
  Catalysis   The dependence of the QCD coupling constant with a strong magnetic field and
the implications for the critical temperature of the chiral phase transition
are investigated. It is found that the coupling constant becomes anisotropic in
a strong magnetic field and that the quarks, confined by the field to the
lowest Landau level where they pair with antiquarks, produce an antiscreening
effect. These results lead to inverse magnetic catalysis, providing a natural
explanation for the behavior of the critical temperature in the strong-field
region.

4
The categories of this paper are: cond-mat
10
The categories of this paper are: q-bio
7
The categories of this paper are: hep-th
27
The categories of this paper are: comp-gas
21
The categories of this paper are: adap-org
22
The categories of this paper are: chao-dyn
19
The categories of this paper are: eess
5
The categories of this paper are: gr-qc
23
The categories of this paper are: solv-int
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The categories of this paper are: nlin
11
The categories of this paper are: hep-lat
32
The categories of this paper are: atom-ph
2
The categories of this paper are: math
33
The categories of this paper are: plasm-ph
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The categories of this paper are: math-ph
31
The categories of this paper are: ao-sci