Symmetry breaking induced by random fluctuations for Bose-Einstein condensates in a double-well trap
arXiv:cond-mat/0409479 · doi:10.1103/PhysRevA.71.033603
Abstract
This paper is devoted to the study of the dynamics of two weakly-coupled Bose-Einstein condensates confined in a double-well trap and perturbed by random external forces. Energy diffusion due to random forcing allows the system to visit symmetry-breaking states when the number of atoms exceeds a threshold value. The energy distribution evolves to a stationary distribution which depends on the initial state of the condensate only through the total number of atoms. This loss of memory of the initial conditions allows a simple and complete description of the stationary dynamics of the condensate which randomly visits symmetric and symmetry-breaking states.
12 pages, 6 figures
References in corpus (9)
- Theory of Bose-Einstein condensation in trapped gases
- Quantum Coherent Atomic Tunneling between Two Trapped Bose-Einstein Condensates
- Josephson effect between trapped Bose-Einstein condensates
- Nonlinear Josephson-type oscillations of a driven, two-component Bose-Einstein condensate
- Josephson effects in dilute Bose-Einstein condensates
- Coherent Atomic Oscillations and Resonances between Coupled Bose-Einstein Condensates with Time-Dependent Trapping Potential
- Macroscopic Quantum Fluctuations in the Josephson Dynamics of Two Weakly Linked Bose-Einstein Condensates
- The dynamics of a strongly driven two component Bose-Einstein Condensate
- Macroscopic quantum tunneling and resonances in coupled Bose-Einstein condensates with oscillating atomic scattering length