Thermodynamic instabilities in dynamical quark models with complex conjugate mass poles

Benić, Sanjin and Blaschke, David and Buballa, Michael (2012) Thermodynamic instabilities in dynamical quark models with complex conjugate mass poles. Physical Review D, 86 (7). pp. 74002-13. ISSN 1550-7998

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Abstract

We show that the Cornwall-Jackiw-Tomboulis thermodynamic potential of dynamical quark models with a quark propagator represented by complex conjugate mass poles inevitably exhibits thermodynamic instabilities. We find that the minimal coupling of the quark sector to a Polyakov loop potential can strongly suppress but not completely remove such instabilities. This general effect is explicitly demonstrated in the framework of a covariant, chirally symmetric, effective quark model.

Item Type: Article
Keywords: non-local NJL, confinement, Polyakov loop
Date: October 2012
Subjects: NATURAL SCIENCES > Physics
Additional Information: Copyright (2012) by the American Physical Society.
Divisions: Faculty of Science > Department of Physics
Project code: 119-0982930-1016
Publisher: American Physical Society
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 26 Aug 2014 14:47
Last Modified: 23 Feb 2016 15:52
URI: http://digre.pmf.unizg.hr/id/eprint/2141

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