Persistent currents in multicomponent Tomonaga-Luttinger liquid:   application to mesoscopic semiconductor ring with spin-orbit interaction
  We study persistent currents in semiconductor ballistic rings with spin-orbit Rashba interaction. We use as a working model the multicomponent Tomonaga-Luttinger liquid which arises due to the nonparabolic dispersion relations of electrons in the rings with rather strong spin-orbit coupling. This approach predicts some new characteristic features of persistent currents, which may be observed in experimental studies of semiconductor ballistic rings. 
M. Pletyukhov, V. Gritsev