Journalartikel

Jahr der Veröffentlichung: 2007

Zeitschrift: Physical Review C

Bandnummer: 76

Heftnummer: 3

ISSN: 2469-9985

eISSN: 2469-9993

Open Access Status: Green

DOI Link: https://doi.org/10.1103/PhysRevC.76.035207

Verlag: American Physical Society

Abstract: 
We investigate the role of short-range correlations in quark matter within the framework of the SU(2) Nambu-Jona-Lasinio model. Employing a next-to-leading order expansion in 1/N-c for the quark self-energy, we construct a fully self-consistent model that is based on the relations between spectral functions and self-energies. In contrast to the usual quasiparticle approximations, we take the collisional broadening of the quark spectral function consistently into account. Mesons are dynamically generated in the fashion of a random phase approximation, using full in-medium propagators in the quark loops. The results are self-consistently fed back into the quark self-energy. Calculations have been performed for finite chemical potentials at zero temperature. The short-range correlations not only generate finite widths in the spectral functions but also have influence on the chiral phase transition.

Harvard-Zitierstil: Froemel, F. and Leupold, S. (2007) Short-range correlations in quark matter, Physical Review C, 76(3), Article 035207. https://doi.org/10.1103/PhysRevC.76.035207

APA-Zitierstil: Froemel, F., & Leupold, S. (2007). Short-range correlations in quark matter. Physical Review C. 76(3), Article 035207. https://doi.org/10.1103/PhysRevC.76.035207