Direct simulation Monte Carlo method for cold-atom dynamics: Classical Boltzmann equation in the quantum collision regime
Abstract
In this paper, we develop a direct simulation Monte Carlo method for simulating highly nonequilibrium dynamics of nondegenerate ultracold gases. We show that our method can simulate the high-energy collision of two thermal clouds in the regime observed in experiments [Thomas Phys. Rev. Lett. 93, 173201 (2004)], which requires the inclusion of beyond s-wave scattering. We also consider the long-time dynamics of this system, demonstrating that this would be a practical experimental scenario for testing the Boltzmann equation and studying rethermalization.
- Publication:
-
Physical Review A
- Pub Date:
- August 2011
- DOI:
- 10.1103/PhysRevA.84.023612
- arXiv:
- arXiv:1105.2340
- Bibcode:
- 2011PhRvA..84b3612W
- Keywords:
-
- 34.50.-s;
- 05.30.Jp;
- 31.15.xv;
- Scattering of atoms and molecules;
- Boson systems;
- Molecular dynamics and other numerical methods;
- Condensed Matter - Quantum Gases
- E-Print:
- 15 pages, 14 figures