15 citations · 46 across the 8 of their papers we have counts for
8 papers
Critical end point in a thermo-magnetic nonlocal NJL model
F. Marquez, R. Zamora
In this article we explore the critical end point in the phase diagram of a thermomagnetic nonlocal Nambu--Jona-Lasinio model in the weak field limit. We work with the Gaussi…
The dual quark condensate in local and nonlocal NJL models: an order parameter for deconfinement?
Federico Marquez, Aftab Ahmad, Michael Buballa +1
We study the beahviour of the dual quark condensate in the Nambu-Jona-Lasinio (NJL) model and its nonlocal variant. In quantum chromodynamics can be realted to the brea…
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…
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…
Unstable quasiparticles as a source of thermodynamic instabilities in the thermal nonlocal Nambu-Jona-Lasinio model
F. Marquez
It has already been shown that in thermal nonlocal Nambu-Jona-Lasinio models some unphysical behavior, such as a negative pressure, may arise. In this article, it is shown how this…
Vacuum instability by a chromoelectric field in 2 + 1-dimensions
M. Loewe, F. Marquez, R. Zamora
The problem of vacuum instability and creation of pairs by external fields SU(2) is studied. The effective mass operator has complex eigenvalues implying decay and pair creation. W…
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…
The cylindrical δ-potential and the Dirac equation
M. Loewe, F. Marquez, R. Zamora
In this article we discuss the Dirac equation in the presence of an attractive cylindrical δ-shell potential V(ρ)=-aδ(ρ-ρ_0), where ρis the radial coordinate and a>0. We present a…