Comparison of Models of Critical Opacity in the Quark-Gluon Plasma

Details Comparison of Models of Critical Opacity in the Quark-Gluon Plasma Comparison of Models of Critical Opacity in the Quark-Gluon Plasma

2004-07-20

arxiv.org/abs/nucl-th/0407061v1

Phys.Rev. C70 (2004) 068201

Physics

Nuclear Physics

Nuclear Theory

7 pages and 4 figures RevTex

Scientific paper

10.1103/PhysRevC.70.068201

In this work we discuss two methods of calculation of quark propagation in the quark-gluon plasma. Both methods make use of the Nambu-Jona-Lasinio model. The essential difference of these calculations is the treatment of deconfinement. A model of confinement is not included in the work of Gastineau, Blanquier and Aichelin [hep-ph/0404207], however, the meson states they consider are still bound for temperatures greater than the deconfinement temperature T_c. On the other hand, our model deals with unconfined quarks and includes a description of the q(bar)q resonances found in lattice QCD studies that make use of the maximum entropy method (MEM). We compare the q{bar)q cross sections calculated in these models.

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