Dresden 2000 – wissenschaftliches Programm

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HK: Physik der Hadronen und Kerne

HK 14: Postersitzung / Theorie

HK 14.5: Poster

Donnerstag, 23. März 2000, 10:15–12:45, B 113

Transporttheorie für skalare Quarks und Gluonen — •Dagmar S. Isert¹ and Sandra P. Klevansky² — ¹Institut für theoretische Physik, Universität Heidelberg, Philosphenweg 19, 69120 Heidelberg — ²DB AG, Kleyerstr.27, 60236 Frankfurt a. M.

A model of scalar gluons and scalar quarks that successfully gives a lns behavior in high energy q q scattering and which contains a three gluon vertex is used to derive transport equations for the quarks and gluons. Quasiparticle and semiclassical approximations are utilized. In particular, the collision integral is studied and a generalized Boltzmann-like equation involving n gluon exchange for quark transport is derived. We then examine the possibility that pinch singularities could arise in this theory, and demonstrate that this is not so for the case of equilibrium and small deviations from equilibrium, at the two loop level. The arguments used can be easily generalized for the n-loop case. Finally, the constraint equation is examined in more detail.