Ground-State Spin of Hubbard Ladder Model with Infinite Electron Repulsion Conference Paper uri icon


  • We apply perturbation theory and cyclic spin permutation formalism to study the lowest energy states of the infinite-repulsion Hubbard model on n-leg ladders with alternating values of one-site energies i for neighboring rungs. We establish the "ferromagnetic" character of ladder ground-state at electron densities in the interval 1 - (2n)-1 1 and sufficiently large alternation of one-site energies of neighbor rungs of the ladder. We also show the stability of this state against the small deviations of the values of i in contrast to the case of two-leg ladder formed by weakly interacting neighbor rungs with equal one-site energies.

published proceedings


author list (cited authors)

  • Cheranovskii, V. O., Ezerskayaa, E. V., Klein, D. J., & Tokarev, V. V.

citation count

  • 0

complete list of authors

  • Cheranovskii, VO||Ezerskayaa, EV||Klein, DJ||Tokarev, VV

publication date

  • April 2017