Norberto N. Scoccola

Masses of the 70- baryons in large Nc QCD

The masses of the negative parity 70-plet baryons are analyzed in large N(c) QCD to order 1/N(c) and to first order in SU(3) symmetry breaking. The existing experimental data are well reproduced and 20 new observables are predicted. The leading order SU(6) spin-flavor symmetry breaking is small and, as it occurs in the quark model, the subleading in 1/N(c) hyperfine interaction is the dominant source of the breaking. It is found that the Lambda(1405) and Lambda(1520) are well described as three-quark states and spin-orbit partners. New relations between splittings in different SU(3) multiplets are found.

Deconfinement and chiral restoration within the SU(3) Polyakov-Nambu-Jona-Lasinio and entangled Polyakov-Nambu-Jona-Lasinio models in an external magnetic field

The behavior of the quark condensates at zero chemical potential and finite temperature subject to an external magnetic field is studied within the three flavor Nambu--Jona-Lasinio model with Polyakov loop (PNJL) and its extension, the so-called entangled PNJL model (EPNJL). A comparison with recent lattice QCD data is performed and it is shown that at

Negative Parity 70-plet Baryon Masses in the 1/N{sub c} Expansion

T=0

Analysis of the [56,2+] baryon masses in the 1/Nc expansion

MeV the light quark condensates are in quantitative agreement. At finite temperature, although there is an overall reasonable agreement with several lattice results, it is shown that in the lattice calculations the effect due to the electric charge quark difference is stronger and the restoration of the

Nonlocal chiral quark models with wavefunction renormalization: Sigma properties and pi-pi scattering parameters.

u

Chiral quark models with nonlocal separable interactions at finite temperature and chemical potential

quark chiral symmetry starts at lower temperatures. When considering the EPNJL model with a Polyakov loop scale parameter that depends on the magnetic field, it is possible to obtain an earlier rise of the Polyakov loop with the increase of the magnetic field and due to the entanglement, the inverse magnetic catalysis is found as in the lattice QCD calculations.

Nonlocal SU(3) chiral quark models at finite temperature: The Role of the Polyakov loop

The masses of the negative parity

Characteristics of the chiral phase transition in nonlocal quark models

\mathrm{SU}(6)

Nonleptonic hyperon weak decays in the Skyrme model reexamined

70-plet baryons are analyzed in the

Chiral phase transition in a covariant nonlocal NJL model

{1/N}_{c}