Current statistics of an antidot in the fractional Hall regime

Current statistics of an antidot in the fractional quantum Hall regime is studied for Laughlin's series in the chiral Luttinger liquid picture of edge states with a renormalized interaction exponent. Universal sub-poissonian transport regimes are identified at low voltages through an analysis of higher current moments. A comparison between moments is proposed in order to clearly distinguish the charge of the carriers, regardless of possible non-universal interaction renormalizations. (C) 2007 Elsevier B.V. All rights reserved.