TUNNELING IN ONE-DIMENSIONAL NON-LUTTINGER ELECTRON LIQUID

The conductance of a weakly interacting electron gas in the presence o f a single scatterer is found at arbitrary strength of the scattering potential. At weak interaction, a simple renormalization group approac h can be used instead of the standard bosonization procedure. Our tech nique allows us to take into account the backscattering of electrons t hat leads to deviations of the low-temperature conductance from the be havior typical for Luttinger liquid. In the presence of magnetic field , the backscattering may give rise to a peak in differential conductan ce at bias equal to the Zeeman energy.