Collision of one dimensional (1D) spin polarized Fermi gases in an optical lattice J. Kajala, F. Massel and P. Törmä Eur. Phys. J. D, 65 1-2 (2011) 91-98 Published online: 28 June 2011 DOI: 10.1140/epjd/e2011-20081-8