Resonant tunneling between quantum Hall edge states

Resonant tunneling between fractional quantum Hall edge states is studied in the Luttinger liquid picture. For the {ν}=1/3 Laughlin parent state, the resonance line shape is a universal function whose width scales to zero at zero temperature. Extensive quantum Monte Carlo simulations are presented for {ν}=1/3 which confirm this picture and provide a parameter-free prediction for the line shape.