We study the influence of external parallel electric and magnetic fields and a chiral chemical potential mu(5) on the chiral phase transition of quantum chromodynamics. Our theoretical framework is a Nambu-Jona-Lasinio model with a contact interaction. Within this model we compute the critical temperature of chiral symmetry restoration T-c as a function of the chiral chemical potential and field strengths. We find that the fields inhibit and mu(5) enhances chiral symmetry breaking, in agreement with previous studies.
; CONSTANT ELECTROMAGNETIC-FIELD
; GROSS-NEVEU MODEL
; 3-DIMENSIONAL GROSS
; NONZERO TEMPERATURE
; DYNAMICAL MODEL