Insulator-superfluid transition of spin-1 bosons in an optical lattice in magnetic field Academic Article uri icon

abstract

  • We study the insulator-superfluid transition of spin-1 bosons in an optical lattice in a uniform magnetic field. Based on a mean-field approximation we obtained a zero-temperature phase diagram. We found that depending on the particle number the transition for bosons with antiferromagnetic interaction may occur into different polar superfluid phases with spins aligned along or opposite to the field direction. This is qualitatively different from the field-free transition for which the mean-field theory predicts a unique polar superfluid state for any particle number. © 2003 The American Physical Society.

published proceedings

  • Physical Review A

author list (cited authors)

  • Svidzinsky, A. A., & Chui, S. T.

publication date

  • January 1, 2003 11:11 AM