The dual quark condensate in local and nonlocal NJL models: an order parameter for deconfinement?

Federico Marquez, Aftab Ahmad, Michael Buballa +1

We study the beahviour of the dual quark condensate ${\Sigma }_1$ in the Nambu-Jona-Lasinio (NJL) model and its nonlocal variant. In quantum chromodynamics ${\Sigma }_1$ can be realted to the brea…