title: Effects of dipole-dipole interaction between cigar-shaped BECs of cold alkali atoms: towards inverse-squared interactions.
abstract: We show that the dipole-dipole coupling between Wannier modes in cigar-shaped Bose-Einstein condensates (BECs) is significantly enhanced while the short-range coupling is strongly suppressed. As a result, the dipole-dipole interaction can become the dominant interaction between ultracold alkali Bose atoms. In the long length limit of a cigar-shaped BEC, the resulting effective one-dimensional models possess an effective inverse squared interacting potential, the Calogero-Sutherland potential, which plays a fundamental role in many fields of contemporary physics; but its direct experimental realization has been a challenge for a long time. We propose to realize the Calogero-Sutherland model in ultracold alkali Bose atoms and study the effects of the dipole-dipole interaction.
authors.affiliation: Department of Physics and Center for Field Theory and Particle Physics, Fudan University, Shanghai 200433, People's Republic of China. The State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, PO Box 2735, Beijing 100190, People's Republic of China.
authors.forename: Yue
authors.initials: Y
authors.lastname: Yu
authors.forename: Zhuxi
authors.initials: Z
authors.lastname: Luo
authors.forename: Ziqiang
authors.initials: Z
authors.lastname: Wang