Köln 2004 – scientific programme
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HK: Physik der Hadronen und Kerne
HK 20: Theory III
HK 20.5: Talk
Tuesday, March 9, 2004, 17:00–17:15, E
Properties of two- and three-quark states in hot and dense matter — •S. Mattiello1, M. Beyer1, S. Strauss1, T. Frederico2, and H.J. Weber3 — 1FB Physik, U Rostock, Germany — 2CTA, Sao Jose dos Campos, Brazil — 3U of Virginia, Charlottesville, USA
In the framework of the light front field theory at finite temperature and
density we investigate the formation of two- and three-body bound states in
quark matter.
This approach leads to the dominant medium effects, i.e. the Pauli blocking
and the self energy corrections.
Utilizing the Nambu-Jona-Lasinio model on the light front we study the
chiral restauration and the dependence of pionic properties (mass and decay
costante) on the temperature and the chemical potential.
The three-quark dynamics is investigated using a scalar zero-range
interaction and the results for the dependence on the medium of the
three-body mass are presented.
The dissociation of the three-quark state as well as the critical
temperature of the color-superconducting phase are investigated.
Acknowledgement: Work supported by Deutsche Forschungsgemeinschaft.