38 citations · 68 across the 8 of their papers we have counts for
8 papers
Magnetic field induced anomalous pion couplings
Fabio L. Braghin, Marcelo Loewe, Cristian Villavicencio
Effective pion-constituent quark couplings induced by relatively weak magnetic fields are calculated in the framework based in Weinberg's large Nc Effective Field Theory. These cou…
Magnetic field dependence of the neutral pion longitudinal screening mass in the linear sigma model with quarks
Alejandro Ayala, Ricardo L. S. Farias, L. A. Hernández +4
We use the linear sigma model with quarks to study the magnetic-field-induced modifications on the longitudinal screening mass for the neutral pion at one-loop level. The effects o…
Magnetic and density effects on the nucleon axial coupling
C. A. Dominguez, M. Loewe, C. Villavicencio +1
Using appropriate QCD finite energy sum rules, we discuss the influence of an external magnetic field and baryonic density on the axial-vector coupling constant . This scena…
Weak magnetic field effects on chiral critical temperature in a nonlocal Nambu--Jona-Lasinio model
M. Loewe, F. Marquez, C. Villavicencio +1
In this article we study the nonlocal Nambu--Jona-Lasinio model with a Gaussian regulator in the chiral limit. Finite temperature effects and the presence of a homogeneous magnetic…
On the magnetic catalysis and inverse catalysis of phase transitions in the linear sigma model
Alejandro Ayala, M. Loewe, C. Villavicencio +1
We consider the evolution of critical temperature both for the formation of a pion condensate as well as for the chiral transition, from the perspective of the linear sigma model,…
Thermodynamic instabilities in nonlocal NJL models
M. Loewe, F. Marquez, C. Villavicencio
It has been recently pointed out, that nonlocal Nambu--Jona-Lasinio models, may present unphysical thermodynamical behavior like negative pressure and oscillating entropy. Here we…
The Linear Sigma Model and the formation of a charged pion condensate in the presence of an external magnetic field
M. Loewe, C. Villavicencio, R. Zamora
We discuss the charged pion condensation phenomenon in the linear sigma model, in the presence of an external uniform magnetic field. The critical temperature is obtained as a func…
The nNJL model with a fractional Lorentzian regulator in the real time formalism
M. Loewe, F. Marquez, C. Villavicencio
In this article we study the finite temperature and chemical potential effects in a nonlocal Nambu-Jona-Lasinio (nNJL) model in the real time formalism. We make the usual Wick rota…