The Bose molecule in one dimension
arXiv:cond-mat/0010095
Abstract
We give the Green function, momentum distribution, two-particle correlation function, and structure factor for the bound state of N indistinguishable bosons with an attractive delta-function interaction in one dimension, and an argument showing that this boson "molecule" has no excited states other than dissociation into separated pieces.
10 pages, 3 figures