Thermalization, condensate growth, and defect formation in an out-of-equilibrium Bose gas
arXiv:1805.05000 · doi:10.1103/PhysRevA.98.013606
Abstract
We experimentally and numerically investigate thermalization processes of a trapped Rb Bose gas, initially prepared in a non-equilibrium state through partial Bragg diffraction of a Bose-Einstein condensate (BEC). The system evolves in a Gaussian potential, where we observe the destruction of the BEC due to collisions, and subsequent growth of a new condensed fraction in an oscillating reference frame. Furthermore, we occasionally observe the presence of defects, which we identify as gray solitons. We simulate the evolution of our system using the truncated Wigner method and compare the outcomes with our experimental results.
arXiv comment7 pages, 4 figures
References in corpus (21)
- Dark Solitons in Bose-Einstein Condensates
- Relaxation and Pre-thermalization in an Isolated Quantum System
- Cosmological Experiments in Condensed Matter Systems
- Non-equilibrium coherence dynamics in one-dimensional Bose gases
- Bragg spectroscopy of a Bose-Einstein condensate
- Dynamics and statistical mechanics of ultra-cold Bose gases using c-field techniques
- Spontaneous creation of Kibble-Zurek solitons in a Bose-Einstein condensate
- Suppression and enhancement of impurity scattering in a Bose-Einstein condensate
- Causality in Condensates: Grey Solitons as Remnants of BEC Formation
- Correlations in a BEC collision: First-principles quantum dynamics with 150 000 atoms
- Quantum turbulence in condensate collisions: an application of the classical field method
- Imaging of s and d partial-wave interference in quantum scattering of identical bosonic atoms
- Growth of Bose-Einstein Condensates from Thermal Vapor
- Inhomogeneous Kibble-Zurek mechanism: vortex nucleation during Bose-Einstein condensation
- Persistence of a Non-Equilibrium State: Observation of a Boltzmannian Special Case
- Trap anharmonicity and sloshing mode of a Fermi gas
- Analysis and calibration of absorptive images of Bose-Einstein condensate at non-zero temperatures
- Quantum Scattering of Distinguishable Bosons using an Ultracold Atom Collider
- Non-equilibrium Atomic Condensates and Mixtures: Collective Modes, Condensate Growth and Thermalization
- Dynamics and thermalization of Bose-Einstein condensate in Sinai oscillator trap
- Calorimetry of a harmonically trapped Bose gas
Cited by in corpus (4)
- High Precision, Quantum-Enhanced Gravimetry with a Bose-Einstein Condensate
- Superflow decay in a toroidal Bose gas: The effect of quantum and thermal fluctuations
- Trap Frequency Measurement with a Pulsed Atom Laser
- Long-lived Nonlinear Oscillatory States in Interacting Relativistic Bose-Einstein Condensates