title: Ferromagnetism in a lattice of Bose-Einstein condensates.
abstract: We show that an ensemble of spinor Bose-Einstein condensates confined in a one-dimensional optical lattice can undergo a ferromagnetic phase transition and spontaneous magnetization arises due to the magnetic dipole-dipole interaction. This phenomenon is analogous to ferromagnetism in solid state physics, but occurs with bosons instead of fermions.
authors.affiliation: Optical Sciences Center, The University of Arizona, Tucson, Arizona 85721, USA.
authors.forename: H
authors.initials: H
authors.lastname: Pu
authors.forename: W
authors.initials: W
authors.lastname: Zhang
authors.forename: P
authors.initials: P
authors.lastname: Meystre