2015/08/01 by Yangqian Yan, D. Blume · 1 citation
Physics and Astronomy · #cond-mat.quant-gas
paper · pdf · doi:10.1103/physreva.91.043607
published as Phys. Rev. A 91, 043607 (2015) · 11 pages, 6 figures
arxiv created 2015/08/01 · arxiv updated 2015/08/04
Ultracold atomic gases are, to a very good approximation, described by pairwise zero-range interactions. This paper demonstrates that N-body systems with two-body zero-range interactions can be treated reliably and efficiently by the finite temperature and ground state path integral Monte Carlo approaches, using the exact two-body propagator for zero-range interactions in the pair product approximation. Harmonically trapped one- and three-dimensional systems are considered. A new propagator for the harmonically trapped two-body system with infinitely strong zero-range interaction, which may also have applications in real time evolution schemes, is presented.