Fermionization of a bosonic gas under highly-elongated confinement: A diffusion quantum Monte Carlo study

Details Fermionization of a bosonic gas under highly-elongated confinement: A diffusion quantum Monte Carlo study Fermionization of a bosonic gas under highly-elongated confinement: A diffusion quantum Monte Carlo study

2002-06-13

arxiv.org/abs/cond-mat/0206244v1

Physics

Condensed Matter

Statistical Mechanics

10 pages, 8 figures

Scientific paper

10.1103/PhysRevA.66.053613

The diffusion quantum Monte Carlo technique is used to solve the many-body Schroedinger equation fully quantum mechanically and nonperturbatively for bosonic atomic gases in cigar-shaped confining potentials. By varying the aspect ratio of the confining potential from 1 (spherical trap) to 10000 (highly elongated trap), we characterize the transition from the three-dimensional regime to the (quasi-)one-dimensional regime. Our results confirm that the bosonic gas undergoes ``fermionization'' for large aspect ratios. Importantly, many-body correlations are included explicitly in our approach.

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