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Related Experiment Videos

Transition to instability in a kicked bose-einstein condensate.

Chuanwei Zhang1, Jie Liu, Mark G Raizen

  • 1Department of Physics, and Center for Nonlinear Dynamics, The University of Texas, Austin, Texas 78712-1081, USA.

Physical Review Letters
|March 6, 2004
PubMed
Summary

A Bose-Einstein condensate

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Area of Science:

  • Quantum physics
  • Condensed matter physics
  • Nonlinear dynamics

Background:

  • Bose-Einstein condensates (BECs) exhibit quantum phenomena.
  • The quantum kicked rotor model describes chaotic behavior in quantum systems.
  • Understanding condensate stability under periodic driving is crucial.

Purpose of the Study:

  • To investigate the stability of a periodically kicked Bose-Einstein condensate.
  • To explore the transition from stable quasiperiodic motion to chaos.
  • To analyze the role of interatomic interactions in condensate dynamics.

Main Methods:

  • Theoretical modeling of a kicked ring Bose-Einstein condensate.
  • Analysis of quantum dynamics and stability criteria.
  • Investigating the effects of varying interaction strengths.

Main Results:

  • Weak interatomic interactions lead to stable quasiperiodic motion (quantum beating).
  • Strong interactions induce chaos, causing condensate instability and atom number growth.
  • Dynamically localized states also transition from stability to chaos with increasing interactions.

Conclusions:

  • Interatomic interactions are critical in determining the stability of kicked Bose-Einstein condensates.
  • A transition to chaos occurs beyond a critical interaction strength, leading to condensate fragmentation.
  • The findings provide insights into quantum chaos and stability in interacting quantum systems.

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