2014/11/10 by Efrain J. Ferrer, Ferrer, Efrain J., Vivian de la Incera +1
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Nuclear Theory (nucl-th) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #Quantum, superfluid, helium dynamics
paper · pdf · doi:10.48550/arxiv.1411.2493
openalex publication_date 2014/11/10 · openalex created_date 2022/10/03 · openalex updated_date 2026/07/28
The chiral symmetry breaking in a Nambu-Jona-Lasinio effective model of\nquarks in the presence of a magnetic field is investigated. We show that new\ninteraction tensor channels open up via Fierz identities due to the explicit\nbreaking of the rotational symmetry by the magnetic field. We demonstrate that\nthe magnetic catalysis of chiral symmetry breaking leads to the generation of\ntwo independent condensates, the conventional chiral condensate and a spin-one\ncondensate. While the chiral condensate generates, as usual, a dynamical\nfermion mass, the new condensate enters as a dynamical anomalous magnetic\nmoment in the dispersion of the quasiparticles. Since the pair, formed by a\nquark and an antiquark with opposite spins, possesses a resultant magnetic\nmoment, an external magnetic field can align it giving rise to a net magnetic\nmoment for the ground state. The two condensates contribute to the effective\nmass of the LLL quasiparticles in such a way that the critical temperature for\nchiral symmetry restoration becomes enhanced.\n