Giulio Pettini

Chiral-symmetry breaking in QCD at finite temperature and density

Abstract We make a theoretical study of chiral symmetry breaking for a QCD-like gauge theory at finite temperature and density. We use a composite-operator functional formalism based on an effective action extending previous calculations for zero temperature and density. Study of the phase diagram shows the existence on the critical line of a point separating second order from first order phase transitions.

Calculation of the QCD phase diagram at finite temperature, and baryon and isospin chemical potentials

We study the phases of a two-flavor Nambu\char21{}Jona-Lasinio model at finite temperature T, and baryon and isospin chemical potentials

Heuristic Argument for Coincidence or Almost Coincidence of Deconfinement and Chirality Restoration in Finite Temperature {QCD}

{\ensuremath{\mu}}_{B}=({\ensuremath{\mu}}_{u}+{\ensuremath{\mu}}_{d})/2,

Ladder-QCD at finite isospin chemical potential

{\ensuremath{\mu}}_{I}=({\ensuremath{\mu}}_{u}\ensuremath{-}{\ensuremath{\mu}}_{d})/2.

Pion and kaon condensation in a 3-flavor Nambu-Jona-Lasinio model

This study completes a previous analysis where only small isospin chemical potentials

Geometry of dynamics and phase transitions in classical lattice phi**4 theories

{\ensuremath{\mu}}_{I}

Self-consistent tight-binding description of Dirac points moving and merging in two dimensional optical lattices

were considered.

Nambu-jona-lasinio-based study of the QCD critical line

Abstract We find that our previous calculation of the pion decay constant at finite temperature, ƒ π (T) , which satisfies the universability condition near the critical chiral temperature, used in conjuction with finite energy sum rules at non zero temperature, suggests coincidence or almost coincidence of the critical temperatures for deconfinement and chirality restoration in QCD.

Pion decay constant at finite temperature

We study the thermodynamics of massive Gross-Neveu models with explicitly broken discrete or continuous chiral symmetries for finite temperature and fermion densities. The large