Regularization dependence on phase diagram in Nambu-Jona-Lasinio model

Understand

We study the regularization dependence on meson properties and the phase diagram of quark matter by using the two flavor Nambu-Jona-Lasinio model.

• We find that the meson properties and the phase structure do not show drastically difference depending the regularization procedures.
• We also find that the location or the existence of the critical end point highly depends on the regularization methods and the model parameters.
• Then we think that regularization and parameters are carefully considered when one investigates the QCD critical end point in the effective model studies.