Extended Bose-Hubbard model with dipolar and contact interactions

Article

关键词: POLAR-MOLECULES;    QUANTUM GASES;    ATOMS;   

DOI  :  10.1103/PhysRevB.97.245102

来源: SCIE

【 摘 要 】

We study the phase diagram of the one-dimensional boson gas trapped inside an optical lattice with contact and dipolar interaction, taking into account next-nearest terms for both tunneling and interaction. Using the density-matrix renormalization group, we calculate how the locations of phase transitions change with increasing dipolar interaction strength for average density rho = 1. Furthermore, we show the emergence of pair-correlated phases for a large dipolar interaction strength and rho >= 2, including a supersolid phase with an incommensurate density wave ordering manifesting the corresponding spontaneous breaking of the translational symmetry.

【 授权许可】

Free