Broken symmetry, hyper-fermions, and universal conductance in transport   through a fractional quantum Hall edge
  We have found solution to a model of tunneling between a multi-channel Fermi liquid reservoir and an edge of the principal fractional quantum Hall liquid (FQHL) in the strong coupling limit. The solution explains how the absence of the time-reversal symmetry at high energies due to chiral edge propagation makes the universal two-terminal conductance of the FQHL fractionally quantized and different from that of a 1D Tomonaga-Luttinger liquid wire, where a similar model but preserving the time-reversal symmetry predicts unsuppressed free-electron conductance. 
Vadim Ponomarenko and Dmitri Averin (SUNY at Stony Brook, USA)