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HK: Physik der Hadronen und Kerne

HK 46: Theory VII

HK 46.1: Gruppenbericht

Donnerstag, 11. März 2004, 16:30–17:00, D

Light front field theory at finite temperature and density — •M. Beyer¹, S. Mattiello¹, S. Strauss¹, T. Frederico², and H.J. Weber³ — ¹FB Physik, U Rostock, Germany — ²CTA, Sao Jose dos Campos, Brazil — ³U Virginia, Charlottesville, USA

A relativistic light front field theory for finite temperature is currently being developed. Based on our previous results we generalize the present formulation to include a finite chemical potential. This extension is in particular relevant for the physics investigated by relativistic heavy ion colliders. So far we have used the Nambu-Jona-Lasinio model to investigate the gap equation and the chiral restoration. We compare results in the light front form to the instant form of relativistic dynamics. To investigate multi-particle correlations we utilize a Dyson expansion in a global light front time. This enables us to study formation and dissociation of hadrons in the vicinity of the phase transition. The approach is well suited to incorporate light front QCD that has been successfully applied, e.g., to describe deep inelastic scattering or to model the structure of hadrons.

Work supported by Deutsche Forschungsgemeinschaft.