## Speaker:

Alexander Elgart

## Institution:

Stanford

## Time:

Thursday, November 4, 2004 - 2:00pm

## Location:

MSTB 254

The integral QHE can be explained either as resulting from bulk or

edge currents (or, in reality, as a combination of both). The equality

of the two conductances at zero temperature was recently established

for the case that the Fermi energy falls in the spectral gap of the bulk

system. We define the edge conductance via a suitable time averaging

procedure in the more general case of a bulk system which exhibits

dynamical localization in the vicinity of the Fermi energy, and show

that the two conductances are equal.

This is a joint work with G.-M. Graf and J. Schenker.