Lowest energy states of Hubbard ladder model with infinite electron repulsion Academic Article uri icon


  • © 2017 Elsevier B.V. We apply cyclic spin permutation formalism to the study the lowest energy states of the infinite-repulsion Hubbard model on n-leg ladders. For ladder fragments with the electron densities ρ = 1 – (2n)−1 we show that the alternation in the values of one-site energies for neighboring rungs leads to the stabilization of the ground state of ladder fragments with the maximal value of the total spin (S0 = Smax) against the increase of the interactions between rungs. The decrease of the electron density may lead to the destruction of this state. For two leg ladder fragments at the density ρ > 0.8 we find a possibility of the transition between the ground states with S0 = Smax and S0 = Smax−1 with the decrease of the interaction between legs.

published proceedings


author list (cited authors)

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

citation count

  • 0

complete list of authors

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

publication date

  • September 2017