Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Generation of strong magnetic fields in hybrid and quark stars driven by
  the electroweak interaction of quarks   We study the generation of strong large scale magnetic fields in compact
stars containing degenerate quark matter with unbroken chiral symmetry. The
magnetic field growth is owing to the magnetic field instability driven by the
electroweak interaction of quarks. In this system we predict the enhancement of
the seed magnetic field $10^{12}\,\text{G}$ to the strengths
$(10^{14}-10^{15})\,\text{G}$. In our analysis we use the typical parameters of
the quark matter in the core of a hybrid star or in a quark star. We also apply
of the obtained results to model the generation of magnetic fields in
magnetars.

34
The categories of this paper are: chem-ph
36
The categories of this paper are: cmp-lg
21
The categories of this paper are: adap-org
19
The categories of this paper are: eess
2
The categories of this paper are: math
22
The categories of this paper are: chao-dyn
35
The categories of this paper are: mtrl-th
11
The categories of this paper are: hep-lat
10
The categories of this paper are: q-bio
17
The categories of this paper are: q-fin
28
The categories of this paper are: alg-geom
23
The categories of this paper are: solv-int
9
The categories of this paper are: nlin
27
The categories of this paper are: comp-gas
16
The categories of this paper are: stat
7
The categories of this paper are: hep-th