On attraction between particles with fractionalized quantum numbers in   one-dimensional devices
  We make some comments about the results we obtained in Phys. Rev. Lett. 86,3392(2001), and in Phys. Rev. Lett.87, 177206 (2001), and show that the conclusion of a recent paper [cond-mat/0409495] leveling some criticism on our results is, in fact, incorrect 
Bogdan A. Bernevig, Domenico Giuliano, and Robert B. Laughlin