2003/12/31 by Tomohiro Inagaki, T. Inagaki, Daiji Kimura +3 · 1 citation
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #High-Energy Particle Collisions Research #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1143/ptp.111.371
published as Prog.Theor.Phys. 111 (2004) 371-386 · 16 pages, 10 figures
openalex publication_date 2004/03/01 · arxiv created 2004/03/15 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We investigate the influence of an external magnetic field on chiral symmetry breaking in a four-fermion interaction model at finite temperature and chemical potential. Using the Fock-Schwinger proper time method, we calculate the effective potential for the four-fermion interaction model to leading order in the 1/Nc expansion. The phase structure of the chiral symmetry breaking is determined in the T-μ, H-T and μ-H planes. The external magnetic field modifies the phase structure. It is found that a new phase appears for a large chemical potential.