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arXiv · 0908.1213

Dual quark condensate in the Polyakov-loop extended Nambu--Jona-Lasinio model

Kouji Kashiwa·Hiroaki Kouno·Masanobu Yahiro
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Abstract

The dual quark condensate $Σ^{(n)}$ proposed recently as a new order parameter of the spontaneous breaking of the ${\mathbb Z}_3$ symmetry are evaluated by the Polyakov-loop extended Nambu--Jona-Lasinio model, where $n$ are winding numbers. The Polyakov-loop extended Nambu--Jona-Lasinio model well reproduces lattice QCD data on $Σ^{(1)}$ measured very lately. The dual quark condensate $Σ^{(n)}$ at higher temperatures is sensitive to the strength of the vector-type four-quark interaction in the Polyakov-loop extended Nambu--Jona-Lasinio model and hence a good quantity to determine the strength.

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Kouji Kashiwa, Hiroaki Kouno, Masanobu Yahiro. 2009-12-09. Dual quark condensate in the Polyakov-loop extended Nambu--Jona-Lasinio model. https://doi.org/10.1103/physrevd.80.117901

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