Fluctuation assisted collapses of Bose-Einstein condensates
arXiv:2204.00246 · doi:10.1088/1572-9494/ac60fb
Abstract
We study the collapse dynamics of a Bose-Einstein condensate subjected to a sudden change of the scattering length to a negative value by adopting the self-consistent Gaussian state theory for mixed states. Compared to the Gross-Pitaevskii and the Hartree-Fock-Bogoliubov approaches, both fluctuations and three-body loss are properly treated in our theory. We find a new type of collapse assisted by fluctuations which amplify the attractive interaction between atoms. Moreover, the calculation of the fluctuated atoms, the entropy, and the second-order correlation function showed that the collapsed gas was significantly deviated from a pure state.
arXiv comment9 pages, 5 figures. Communications in Theoretical Physics (2022)
References in corpus (34)
- Dynamics of collapsing and exploding Bose-Einstein condensates
- Quantum liquid droplets in a mixture of Bose-Einstein condensates
- Atom--Molecule Coherence in a Bose-Einstein Condensate
- Self-bound droplets of a dilute magnetic quantum liquid
- Controlled Collapse of a Bose-Einstein Condensate
- d-wave collapse and explosion of a dipolar Bose-Einstein condensate
- Collapse and Bose-Einstein condensation in a trapped Bose-gas with negative scattering length
- Magnetic Field Dependence of Ultracold Inelastic Collisions near a Feshbach Resonance
- Macroscopic Quantum Tunneling of a Bose-Einstein Condensate with Attractive Interaction
- Intermittent implosion and pattern formation of trapped Bose-Einstein condensates with attractive interaction
- Evolution and global collapse of trapped Bose condensates under variations of the scattering length
- Macroscopic Quantum Tunneling of a Bose Condensate
- Stability of Bose condensed atomic Li-7
- BEC Collapse and Dynamical Squeezing of Vacuum Fluctuations
- Mean-field analysis of collapsing and exploding Bose-Einstein condensates
- Bose-Einstein condensate collapse: a comparison between theory and experiment
- Bosenova and three-body loss in a Rb-85 Bose-Einstein condensate
- Quantum effects on dynamics of instabilities in Bose-Einstein condensates
- Collapse dynamics of trapped Bose-Einstein condensates
- Instability of a Bose-Einstein Condensate with Attractive Interaction
- Quantum depletion of collapsing Bose-Einstein condensates
- Three Dimensional Simulation of Jet Formation in Collapsing Condensates
- Collapsing Bose-Einstein condensates beyond the Gross-Pitaevskii approximation
- Theory for Self-Bound States of Dipolar Bose-Einstein Condensates
- Delayed collapses of BECs in relation to AdS gravity
- Feshbach resonances and collapsing Bose-Einstein condensates
- Dynamics of collapsing and exploding Bose-Einstein condensate
- Mean-field model of jet formation in a collapsing Bose-Einstein condensate
- Quantum-field dynamics of expanding and contracting Bose-Einstein condensates
- Regularized linearization for quantum nonlinear optical cavities: Application to Degenerate Optical Parametric Oscillators
- Evolution of a collapsing and exploding Bose-Einstein condensate in different trap symmetries
- Hartree-Fock-Bogoliubov Model and Simulation of Attractive and Repulsive Bose-Einstein Condensates
- Trapped Bose-Einstein Condensates with Attractive s-wave Interaction
- Collapse times for attractive Bose-Einstein condensates