Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Chiral Phase Transition and Instanton Anti-instanton Molecules   We explore the idea that the chiral phase transition in QCD can be described
as a transition from a disordered instanton liquid to a strongly correlated
phase of polarized instanton anti-instanton molecules. We find a number of non
perturbative effects caused by the presence of instantons above T_c, among them
the fact that instantons contribute to the euquation of state. We also study
how instantons affect the propagation of light quarks at high temperature and
determine the spacelike screening masses for mesons and baryons. We derive the
corresponding effective interaction and find that the interaction in the
scalar-pseudoscalar channel is attractive and four times stronger than the one
in the vector-axial-vector channel, in agreement with recent lattice QCD
simulations.

10
The categories of this paper are: q-bio
21
The categories of this paper are: adap-org
34
The categories of this paper are: chem-ph
4
The categories of this paper are: cond-mat
31
The categories of this paper are: ao-sci
20
The categories of this paper are: acc-phys
27
The categories of this paper are: comp-gas
2
The categories of this paper are: math
6
The categories of this paper are: astro-ph
28
The categories of this paper are: alg-geom
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The categories of this paper are: chao-dyn
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The categories of this paper are: funct-an
30
The categories of this paper are: q-alg
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The categories of this paper are: q-fin
33
The categories of this paper are: plasm-ph
35
The categories of this paper are: mtrl-th