An effective theory for conductance by symmetry breaking

Details An effective theory for conductance by symmetry breaking An effective theory for conductance by symmetry breaking

2000-01-05

arxiv.org/abs/cond-mat/0001053v2

Physics

Condensed Matter

Strongly Correlated Electrons

18 pages, more explanation added

Scientific paper

An effective theory is suggested for the particle-anti particle and the particle-particle modes of strongly disordered electron systems. The effective theory is studied in the framework of the saddle point expansion and found to support a vacuum which is not invariant under translations in imaginary time. The Goldstone bosons of this symmetry breaking generate a pole in the density-density correlation function. The condensate of the auxiliary field corresponding to the particle-particle channel produces conductivity without relying on the long range fluctuations. The results are obtained for $d>1$.

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