2d random Dirac fermions: large N approach

2002/01/03 by D. Serban, Serban, D.
Physics and Astronomy · #Disordered Systems and Neural Networks (cond-mat.dis-nn) #FOS: Physical sciences #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #cond-mat.dis-nn #cond-mat.mes-hall

paper · pdf · doi:10.48550/arxiv.cond-mat/0201030

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

arxiv created 2002/01/03 · arxiv updated 2009/11/30

Abstract

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.

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