标题： 准二维偶极玻色气体的非平均场特性 显示英文标题

标题： Nonuniversal beyond mean field properties of quasi-two-dimensional dipolar Bose gases

摘要： 我们研究了一种准二维的玻色偶极子气体，计算了忽略横向模结构的基态能量和化学势的超越平均场修正。 我们表明，这些修正对相互作用的高动量部分敏感，不能仅用散射长度和偶极强度来表示。 虽然非普适，但修正被发现是负的，这在扩展的Gross-Pitaevskii方程中提供了额外的吸引项，增强了roton不稳定性。 显示英文摘要

摘要： We study a quasi-two dimensional gas of bosonic dipoles, calculating the beyond mean field corrections to the ground state energy and chemical potential neglecting the transverse mode structure. We show that the corrections are sensitive to the high momentum part of the interaction and cannot be expressed solely in terms of the scattering length and the dipole strength. While nonuniversal, the correction is found to be negative, which provides an additional attractive term in the extended Gross-Pitaevskii equation, enhancing the roton instability.