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arXiv · 1205.3361

Chiral symmetry restoration and deconfinement in QCD at finite temperature

C. A. Dominguez·M. Loewe·Y. Zhang
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Abstract

The light-quark correlator in the axial-vector channel is used, in conjunction with finite energy QCD sum rules at finite temperature, in order to (a) establish a relation between chiral-symmetry restoration and deconfinement, and (b) determine the temperature behavior of the $a_1(1260)$ width and coupling. Results indicate that deconfinement takes place at a slightly lower temperature than chiral-symmetry restoration, although this difference is not significant given the accuracy of the method. The behaviour of the $a_1(1260)$ parameters is consistent with quark-gluon deconfinement, as the width grows and the coupling decreases with increasing temperature.

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C. A. Dominguez, M. Loewe, Y. Zhang. 2012-05-23. Chiral symmetry restoration and deconfinement in QCD at finite temperature. https://doi.org/10.1103/physrevd.86.034030

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