Effects of interactions on the dynamics of driven cold atoms

PHYSICA D-NONLINEAR PHENOMENA

卷:300

Article

Bakman, Alexandra¹  Fishman, Shmuel¹ 

[1] Technion Israel Inst Technol, Dept Phys, IL-3200 Haifa, Israel

关键词: Fidelity;    BEC;    Cold atoms;    Classical;    GPE;   

DOI  :  10.1016/j.physd.2015.02.006

来源: Elsevier

【 摘 要 】

The quantum fidelity was introduced by Peres to study some fingerprints of classically chaotic behavior in the quantum dynamics of the corresponding systems. In the present paper the signatures of classical dynamics near elliptic points and of interactions between particles are characterized for kicked systems. In particular, the period of the fidelity resulting of the interactions is found using analytical and numerical calculations. A mechanism leading to the oscillations with the intermediate period is proposed. It is of a classical origin and results of the interplay between the oscillations of the width of the wave packets and the rotation of their center around the elliptic fixed point. (C) 2015 Elsevier B.V. All rights reserved.

【 授权许可】

Free