New treatment of the chiral quark mean field model

The chiral and deconfinement transitions: PNJL model beyond mean field

In Ref. [3] we have presented a way to calculate corrections beyond mean field, resolving issues related to the complex fermion determinant in the PNJL model. This is achieved by means of a perturbative approach establishing a systematically ordered series of correction terms. We define the unperturbed model by the Taylor expansion up to second order in the fields of the real part of the bosoni...

The Dilated Chiral Quark Model

It is argued that constituent quarks live in an effective theory that possesses an approximate conformal invariance. An effective lagrangian is constructed which in the large-Nc approximation incorporates Regge asymptotic constraints. The resulting picture explains why linear-sigma models provide successful constituent quark descriptions, both at zero and finite temperature. Our analysis sugges...

Chiral Quark Model

Abstract. In this talk I review studies of hadron properties in bosonized chiral quark models for the quark flavor dynamics. Mesons are constructed from Bethe–Salpeter equations and baryons emerge as chiral solitons. Such models require regularization and I show that the two–fold Pauli–Villars regularization scheme not only fully regularizes the effective action but also leads the scaling laws ...

Quark Droplets in the NJL Mean Field

Quark mean field model for nuclear matter and finite nuclei

We study nuclear matter and finite nuclei in terms of the quark mean field (QMF) model, in which we describe the nucleon using the constituent quark model. The meson mean fields, in particular the σ meson, created by other nucleons act on quarks inside a nucleon and change the nucleon properties in nuclear medium. The QMF model predicts an increasing size of the nucleon as well as a reduction o...