Catalysis of Dynamical Flavor Symmetry Breaking by a Magnetic Field in 2+1 Dimensions
Abstract
It is shown that in 2+1 dimensions, a constant magnetic field is a strong catalyst of dynamical flavor symmetry breaking, leading to generating a fermion dynamical mass even at the weakest attractive interaction between fermions. The effect is illustrated in the Nambu-Jona-Lasinio model in a magnetic field. The low-energy effective action in this model is derived, and the thermodynamic properties of the model are established.
- Publication:
-
Physical Review Letters
- Pub Date:
- December 1994
- DOI:
- 10.1103/PhysRevLett.73.3499
- arXiv:
- arXiv:hep-ph/9405262
- Bibcode:
- 1994PhRvL..73.3499G
- Keywords:
-
- 11.10.Kk;
- 11.30.Qc;
- Field theories in dimensions other than four;
- Spontaneous and radiative symmetry breaking;
- High Energy Physics - Phenomenology;
- High Energy Physics - Theory
- E-Print:
- 11 pages, LaTeX. The final version (with minor corrections) which appeared in Phys.Rev.Lett. 73 (1994) 3499