Mirco Milletarì, Bernd Rosenow
We investigate the effect of non-equilibrium and interactions on shot noise in $\nu=2$ quantum Hall edges, where interactions between co-propagating edge modes are expected to give rise to charge fractionalization. Using the method of non-equilibrium bosonization, we find that even asymptotically the edge distribution function does not thermalize, but instead depends in a sensitive way on the interaction strength between edge modes. We compute shot noise and Fano factor from the asymptotic distribution function, and from comparison with a reference model of fractionalized excitations we find that the Fano factor can be close to the value of the fractionalized charge.
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http://arxiv.org/abs/1207.1719
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