Correlation functions of a Lieb-Liniger Bose gas
arXiv:cond-mat/0510463 · doi:10.1088/0953-4075/39/10/S01
Abstract
The ground-state correlation functions of a one-dimensional homogeneous Bose system described by the Lieb-Liniger Hamiltonian are investigated by using exact quantum Monte Carlo techniques. This article is an extension of a previous study published in Phys. Rev. A {\bf 68}, 031602 (2003). New results on the local three-body correlator as a function of the interaction strength are included and compared with the measured value from three-body loss experiments. We also carry out a thorough study of the short- and long-range behavior of the one-body density matrix.
10 pages, 8 figures, contribution to Cortona BEC JPB special issue