Nuclear
Physics Colloquium
Institute for Theoretical Physics, Physics Building, Seminar Room PHYS
2.116
Time: Thursday, May 21, 4:30-5:30 pm (s.t.) (plus
10min for discussion)
Contact: hees@fias.uni-frankfurt.de
From Hadron Resonance Gas to
Quark Matter
David Blaschke (University Wroclav
and JINR Dubna)
Twenty
years ago, a generalized Beth-Uhlenbeck approach for the description of
meson dissociation in quark matter was pioneered by Jörg Hüfner and his
group in Heidelberg
on the basis of the Nambu-Jona-Lasinio model.
We shall review a recent development of this approach within the
Polyakov-NJL model for the Mott dissociation of mesons and diquarks, the
importance of the Levinson theorem being emphasized. A phenomenological
model for the generic behaviour of hadronic phase shifts at the Mott
transition is presented which allows to describe the transition from a
hadron resonance gas to PNJL quark matter through a sequence of Mott
transitions.
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