Light-front Nambu--Jona-Lasinio model at finite temperature and density

Abstract

In recent years light-front quantisation has been extended to allow for a consistent treatment of systems at finite temperature and density. This is in particular interesting for an investigation of the processes in nuclear matter under extreme condition as occurring, e.g., during a heavy ion collision. Utilising a Dyson expansion to the N-point Green functions at finite temperature and density we focus on the occurrence of pionic and scalar diquark dynamics in quark matter and compute the masses and the Mott dissociation using a separable t-matrix approach. For the scalar quark-quark correlation we determine the critical temperature of colour superconductivity using the Thouless criterion. On the same footing the properties of the nucleon in a medium of quark matter are computed within a Faddeev approach. Critical lines for nucleon breakup are given. Presently, we use a light-front Nambu--Jona-Lasinio model that allows us to compare these results of this novel approach to the more traditional instant form approach, where applicable.

16 pages, 6 figures

References in corpus (5)

• The QCD transition temperature: results with physical masses in the continuum limit
• The QCD Equation of State with almost Physical Quark Masses
• Suppression of elliptic flow in a minimally viscous quark-gluon plasma
• Light front QED${}_{1+1}$ at finite temperature
• Light front thermal field theory at finite temperature and density