一维受限格点玻色子的偶极振荡
Dipole oscillations of confined lattice bosons in one dimension
摘要：
利用精确含时数值DMRG方法研究了一维光晶格中相互作用冷玻色子组成的非可积系统的动力学行为。粒子被抛物势所约束，偶极振荡是通过移动几个晶格位置的陷阱中心而引起的。取决于系统参数，该运动可以从无阻尼到过阻尼变化。我们研究了偶极振荡作为晶格位移，粒子密度和粒子间相互作用强度的函数。这些结果解释了最近的实验C.D. Fertig等人，物理修订版信函94，120403（2005）。
英文摘要：
We study the dynamics of a non-integrable system comprising interacting cold bosons trapped in an optical lattice in one-dimension by means of exact time-dependent numerical DMRG techniques. Particles are confined by a parabolic potential, and dipole oscillations are induced by displacing the trap center of a few lattice sites. Depending on the system parameters this motion can vary from undamped to overdamped. We study the dipole oscillations as a function of the lattice displacement, the particle density and the strength of interparticle interactions. These results explain the recent experiment C.D. Fertig et al., Phys. Rev. Lett. 94, 120403 (2005).
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
