Wednesday, May 16, 2012

1205.3361 (C. A. Dominguez et al.)

Chiral symmetry restoration and deconfinement in QCD at finite
temperature
   [PDF]

C. A. Dominguez, M. Loewe, Y. Zhang
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.
View original: http://arxiv.org/abs/1205.3361

No comments:

Post a Comment