30 citations · 30 across the 1 of their papers we have counts for
5 papers
Non-Identical Neutron Star Twins
Norman K. Glendenning, Christiane Kettner
The work of J. A. Wheeler in the mid 1960's showed that for smooth equations of state no stable stellar configurations with central densities above that corresponding to the limiti…
A renormalizable extension of the NJL-model
Kurt Langfeld, Christiane Kettner, Hugo Reinhardt
The Nambu-Jona-Lasinio model is supplemented by the quark interaction generated by the one-gluon exchange. The employed gluon propagator exhibits the correct large momentum behavio…
The quark condensate in the GMOR relation
Kurt Langfeld, Christiane Kettner
The quark condensate which enters the Gell-Mann-Oakes-Renner (GMOR) relation, is investigated in the framework of one-gluon-exchange models. The usual definition of the quark conde…
Faddeev equation for heavy baryons in the quark-diquark picture
D. Ebert, T. Feldmann, C. Kettner +1
We describe heavy baryons as bound states of a quark and a diquark. For this purpose we derive the Faddeev equation for baryons containing a single heavy quark from a Nambu-Jona-La…
A diquark model for baryons containing one heavy quark
D. Ebert, T. Feldmann, C. Kettner +1
We present a phenomenological ansatz for coupling a heavy quark with two light quarks to form a heavy baryon. The heavy quark is treated in the heavy mass limit, and the light quar…