Resumen
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.
Idioma original | Inglés |
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Número de artículo | 214525 |
Publicación | Physical Review B - Condensed Matter and Materials Physics |
Volumen | 79 |
N.º | 21 |
DOI | |
Estado | Publicada - 24 jun. 2009 |