Criterion for the critical number of fermions and chiral symmetry breaking in anisotropic QED{sub 3}
Journal Article
·
· Physical Review. B, Condensed Matter and Materials Physics
- Department of Physics and Astronomy, Johns Hopkins University, Baltimore, Maryland 21218 (United States)
By analyzing the strength of a photon-fermion coupling using basic scattering processes we calculate the effect of a velocity anisotropy on the critical number of fermions at which mass is dynamically generated in planar quantum electrodynamics. This gives a quantitative criterion which can be used to locate a quantum critical point at which fermions are gapped and confined out of the physical spectrum in a phase diagram of various condensed-matter systems. We also discuss the mechanism of relativity restoration within the symmetric quantum-critical phase of the theory.
- OSTI ID:
- 21287027
- Journal Information:
- Physical Review. B, Condensed Matter and Materials Physics, Vol. 79, Issue 21; Other Information: DOI: 10.1103/PhysRevB.79.214525; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1098-0121
- Country of Publication:
- United States
- Language:
- English
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