Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Chiral symmetry breaking and restoration from holography   We study intersection of $N_c$ color D4 branes with $N_f$ Dp-branes and
anti-Dp branes in the strong coupling limit in the probe approximation. The
resulting model has $U(N_f)\times U(N_f)$ global symmetry. We see an $n$
dimensional theory for $n$ overlapping directions between color and flavor
branes. At zero temperature we do see the breakdown of chiral symmetry, but
there arises a puzzle: we do not see any massless NG boson to the break down of
the chiral symmetry group for $n=2,3$ for a specific p. At finite temperature
we do see the restoration of chiral symmetry group and the associated phase
transitions are of first order. The chiral symmetry restoration is described by
a curve, which connects L, the asymptotic distance of separation between the
auarks, with the temperature, T. In general this quantity is very difficult to
compute but if we evaluate it numerically then the curve is described by an
equation $L T=c$, where c is a constant and is much smaller than one. It means
for $L/R_{\tau}$ above $2\pi c$ there occurs the deconfined phase along with
the chiral symmetryrestored phase.

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The categories of this paper are: quant-ph
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The categories of this paper are: funct-an
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The categories of this paper are: atom-ph
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The categories of this paper are: mtrl-th
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The categories of this paper are: nucl-th
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The categories of this paper are: q-fin
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The categories of this paper are: solv-int
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The categories of this paper are: acc-phys
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The categories of this paper are: ao-sci
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The categories of this paper are: comp-gas
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The categories of this paper are: cond-mat
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The categories of this paper are: stat
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The categories of this paper are: bayes-an
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The categories of this paper are: physics
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The categories of this paper are: hep-ex
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The categories of this paper are: nlin