Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Finite temperature pion vector form factors in Chiral Perturbation
  Theory   We discuss the thermal behaviour of the pion vector form factors and
calculate them in one-loop Chiral Perturbation Theory. The perturbative result
is used to analyze the $T$-dependent electromagnetic pion charge radius,
obtaining a rough estimate of the deconfinement critical temperature. Imposing
thermal unitarity, we generate the $\rho$ resonance pole for the form factor in
the center of mass frame. The $\rho$ peak height in the modulus of the form
factor decreases for increasing temperature, while its width increases and the
peak position is slightly shifted downwards for $T\simeq$ 150 MeV. These
results point in the direction suggested by many analysis of dilepton
production data in relativistic heavy ion collisions.

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The categories of this paper are: q-fin
30
The categories of this paper are: q-alg
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The categories of this paper are: mtrl-th
10
The categories of this paper are: q-bio
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The categories of this paper are: acc-phys
29
The categories of this paper are: funct-an
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The categories of this paper are: comp-gas
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The categories of this paper are: hep-lat
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The categories of this paper are: atom-ph
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The categories of this paper are: stat
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The categories of this paper are: astro-ph
28
The categories of this paper are: alg-geom
1
The categories of this paper are: cs
14
The categories of this paper are: math-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: nlin