How universal is the fractional-quantum-Hall edge Luttinger liquid?

Abstract

This article reports on our microscopic investigations of the edge of the fractional quantum Hall state at filling factor $\nu =1/3$. We show that the interaction dependence of the wave function is well described in an approximation that includes mixing with higher composite-fermion Landau levels in the lowest order. We then proceed to calculate the equal time edge Green function, which provides evidence that the Luttinger exponent characterizing the decay of the Green function at long distances is interaction dependent. The relevance of this result to tunneling experiments is discussed.

5 pages

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