The effect of optical lattice heating on the momentum distribution of a 1D Bose gas

Abstract

We theoretically study how excitations due to spontaneous emission and trap fluctuations combine with elastic collisions to change the momentum distribution of a trapped non-degenerate one-dimensional (1D) Bose gas. Using calculated collisional relaxation rates, we first present a semi-analytical model for the momentum distribution evolution to get insight into the main processes responsible for the system dynamics. We then present a Monte-Carlo simulation that includes features that cannot be handled analytically, and compare its results to experimental data. These calculations provide a baseline for how integrable 1D Bose gases evolve due to heating processes in the absence of diffractive collisions that might thermalize the gases.

References in corpus (5)

• Thermalization and its mechanism for generic isolated quantum systems
• Relaxation and Pre-thermalization in an Isolated Quantum System
• Non-equilibrium coherence dynamics in one-dimensional Bose gases
• Non-equilibrium dynamics of bosonic atoms in optical lattices: Decoherence of many-body states due to spontaneous emission
• Integrability, Non-integrability and confinement

Cited by in corpus (6)

• Thermalization near integrability in a dipolar quantum Newton's cradle
• Generalized hydrodynamics in strongly interacting 1D Bose gases
• Extension of the Generalized Hydrodynamics to the Dimensional Crossover Regime
• Relaxation of Bosons in One Dimension and the Onset of Dimensional Crossover
• Energy-dependent 3-body loss in 1D Bose gases
• One-dimensional atomic superfluids as a model system for quantum thermodynamics