The Nambu and Jona-Lasinio model: Its implications for Hadrons and Nuclei

U. Vogl, W. Weise

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900 Scopus citations

Abstract

We review recent developments and applications of the Nambu and Jona-Lasinio model with three quark flavours, based on the SU(3)L ⊗ SU(3)R ⊗ U(1)V symmetry of QCD. The model describes dynamical quark mass generation and spontaneous chiral symmetry breaking and includes effects of the axial U(1) anomaly. Mesons emerge as quark-antiquark modes; their spectra and properties are discussed. Properties of constituent quarks as quasi-particles, dressed by their strong interactions, are summarized. The quark-diquark structure of baryons is developed, and a brief summary is given on baryonic solitons as they result from the NJL model. Finally, selected implications for nuclear physics are described, such as the change of hadron structure in a dense and hot nuclear medium.

Original languageEnglish
Pages (from-to)195-272
Number of pages78
JournalProgress in Particle and Nuclear Physics
Volume27
Issue numberC
DOIs
StatePublished - 1991
Externally publishedYes

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