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arXiv · 1311.0073

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

Jean-Félix Riou·Laura A. Zundel·Aaron Reinhard·David S. Weiss
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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.

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Jean-Félix Riou, Laura A. Zundel, Aaron Reinhard, David S. Weiss. 2013-11-01. The effect of optical lattice heating on the momentum distribution of a 1D Bose gas. https://doi.org/10.1103/physreva.90.033401

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