Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Chiral Symmetry Restoration and Deconfinement in the Contact Interaction
  Model of Quarks with a Parallel Electric and Magnetic Fields   We study the impact of steady, homogeneous, and external parallel electric
and magnetic field strength ($eE\parallel eB$), on the chiral symmetry
breaking-restoration and confinement-deconfinement phase transitions. We also
sketch the phase diagram of quantum chromodynamics (QCD) at finite temperature
$T$ and in the presence of background fields. Our unified formalism for this
study is based on the Schwinger-Dyson equations, symmetry preserving
vector-vector contact interaction model of quarks, and the proper time
regularization scheme. At $T=0$, in the purely magnetic case ($eE\rightarrow
0$), we observe the well known magnetic catalysis effect. On the other hand, in
the pure electric field background ($eB\rightarrow 0$), the electric field
tends to restore the chiral symmetry and deconfinement above the
pseudo-critical electric field $eE^{\chi, C}_c$. In the presence of both $eE$
and $eB$: we find the magnetic catalysis effect in the particular region where
$eB$ dominates over $eE$, whereas, we observe the chiral inhibition (or
electric chiral rotation) effect, when $eE$ stand over $eB$. At finite $T$, in
the pure electric field case, the phenomenon of inverse electric catalysis
appears to exist in our model. On the other hand for pure magnetic field
background, we notice the magnetic catalysis effect in the mean-field
approximation and inverse magnetic catalysis with $eB$-dependent coupling. The
combined effect of both $eE$ and $eB$ on the pseudo-critical $T^{\chi, C}_c$
yields the inverse electromagnetic catalysis, with and without $eB-$dependent
effective coupling of the model. Our findings are satisfactory in agreement
with already predicted results by lattice simulations and other reliable
effective models of QCD.

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The categories of this paper are: q-bio
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The categories of this paper are: quant-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: eess
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The categories of this paper are: math-ph
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The categories of this paper are: hep-ex
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The categories of this paper are: mtrl-th
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The categories of this paper are: hep-lat
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The categories of this paper are: patt-sol
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The categories of this paper are: dg-ga
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The categories of this paper are: chem-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: physics
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The categories of this paper are: atom-ph
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The categories of this paper are: supr-con
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The categories of this paper are: acc-phys