caa a22 4500 465801013 CHVBK 20180323112052.0 cr unu---uuuuu 170327e19900601xx s 000 0 eng 10.1007/BF01290624 doi (NATIONALLICENCE)springer-10.1007/BF01290624 Relation between the Lee-Wick and Nambu-Jona-Lasinio models of chiral symmetry breaking [Elektronische Daten] [S. Klevansky, R. Lemmer] The connection between the sigma model of Lee and Wick and the Nambu-Jona-Lasinio (NJL) model is discussed. It is shown that the sigma field potential of the linear Lee-Wick model is identical in form with the variation of the vacuum energy of the NJL system with the baryonic scalar densityn s. The sigma field is proportional ton s. Furthermore, the coupling constant and mass of thisσ field are fully determined by the NJL model version of the Goldberger-Treiman relation. It is shown further that the restoration of chiral symmetry with increasing baryonic density always occurs via a second order transition in the NJL model, while it is necessarily of first order in the associated linear Lee-Wick model. Springer-Verlag, 1990 11.30.Rd nationallicence 11.30.Qc nationallicence Klevansky S. Institut für Theoretische Physik, Universität Heidelberg, Federal Republic of Germany aut Lemmer R. Physik Department (T30), Technische Universität München, Garching, Federal Republic of Germany aut Zeitschrift für Physik A Atomic Nuclei Springer-Verlag 336/2(1990-06-01), 223-228 0939-7922 336:2<223 1990 336 218 https://doi.org/10.1007/BF01290624 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01290624 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Klevansky S. Institut für Theoretische Physik, Universität Heidelberg, Federal Republic of Germany aut NATIONALLICENCE 700 1- Lemmer R. Physik Department (T30), Technische Universität München, Garching, Federal Republic of Germany aut NATIONALLICENCE 773 0- Zeitschrift für Physik A Atomic Nuclei Springer-Verlag 336/2(1990-06-01), 223-228 0939-7922 336:2<223 1990 336 218 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer