Ground state correlations in a trapped quasi one-dimensional Bose Gas
arXiv:cond-mat/0411483 · doi:10.1016/j.optcom.2004.11.043
Abstract
We review the basic concepts of a non-equilibrium kinetic theory of a trapped bosonic gas. By extending the successful mean-field concept of the Gross-Pitaevskii equation with the effects of non-local, two particle quantum correlations, one obtains a renormalized binary interaction and allows for the dynamic establishment of non-classical many-particle quantum correlations. These concepts are illustrated by self-consistent numerical calculations of the first and second order ground state quantum correlations of a harmonically trapped, quasi one-dimensional bosonic gas. We do find a strong suppression of the density fluctuations or, in other words, an enhanced number squeezing with decreasing particle density.
19 pages LaTeX, 19 color figures, to be published in the special issue on "Degenerate Quantum Gases" in Opt. Com. (2004)