arXiv:cond-mat/0201030 Abstract

arXiv:cond-mat/0201030Abstract References Reviews Resources

2d random Dirac fermions: large N approach

Published 2002-01-03Version 1

We study the symmetry classes for the random Dirac fermions in 2 dimensions. We consider $N_f$ species of fermions, coupled by different types of disorder. We analyse the renormalisation group flow at the order of one loop. At $N_f$ large, the disorder distribution flows to an isotropic distribution and the effective action is a sigma model.

Comments: 12 pages, contribution to the proceedings of Advanced NATO Workshop on Statistical Field Theories, Como, June 18-23, 2001

Categories: cond-mat.mes-hall, cond-mat.dis-nn

Keywords: 2d random dirac fermions, renormalisation group flow, disorder distribution flows, sigma model, symmetry classes

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