Latest documents http://publikationen.ub.uni-frankfurt.de/index/index/ Mon, 12 Dec 2005 10:29:16 +0100 Mon, 12 Dec 2005 10:29:16 +0100 http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/3099 Nuclei can be described satisfactorily in a nonlinear chiral SU(3)-framework, even with standard potentials of the linearmodel. The condensate value of the strange scalar meson is found to be important for the properties of nuclei even without adding hyperons. By neglecting terms which couple the strange to the nonstrange condensate one can reduce the model to a Walecka model structure embedded in SU(3). We discuss inherent problems with chiral SU(3) models regarding hyperon optical potentials. Panajotis Papazoglou; Detlef Zschiesche; Stefan Schramm; Jürgen Schaffner-Bielich; Horst Stöcker; Walter Greiner preprint http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/3099 Mon, 12 Dec 2005 10:29:16 +0100 http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/3113 A new chiral SU(3) Lagrangian is proposed to describe the properties of kaons and anti-kaons in the nuclear medium. The saturation properties of nuclear matter are reproduced as well as the results of the Dirac-Brückner theory. After introducing the coupling between the omega meson and the kaon, our results for e ective kaon and anti-kaon energy are quite similar as calculated in the one-boson-exchange model. Guangjun Mao; Panajotis Papazoglou; Stefan Hofmann; Stefan Schramm; Horst Stöcker; Walter Greiner preprint http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/3113 Thu, 08 Dec 2005 11:13:50 +0100