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

الأصل · EN

The dual quark condensate Σ⁽ⁿ⁾ proposed recently as a new order parameter of the spontaneous breaking of the Z₃ 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.