Interacting electrons in a nearly straight quantum wire
  The conductance threshold of a clean nearly straight quantum wire in which a single electron is bound is studied. This exhibits spin-dependent conductance anomalies on the rising edge to the first conductance plateau, near G=0.25(2e^{2}/h) and G=0.7(2e^{2}/h), related to a singlet and triplet resonances respectively. We show that the problem may be mapped on to an Anderson-type of Hamiltonian and calculate the energy dependence of the energy parameters in the resulting model. 
T. Rejec (J. Stefan Institute, Ljubljana, Slovenia), A. Ramsak   (Faculty of Mathematics and Physics, J. Stefan Institute, L...