Hits:

Indexed by:期刊论文

Date of Publication:2016-09-08

Journal:PHYSICAL REVIEW A

Included Journals:SCIE、EI、Scopus

Volume:94

Issue:3

ISSN No.:2469-9926

Abstract:We construct a simple model to calculate the trimer bound state energy E-T((n)) and three-body recombination rate K-3(0) of three identical bosons with van der Waals interaction without using any two-or three-body fitting parameter. Using this simple model, we investigate the influence of the van der Waals finite-range effect on E-T((n)) and K-3(0). Our calculation shows that the finite-range effect leads to the ground trimer state energy E-T((0)) not crossing the atom-dimer threshold, and the scaled three-body recombination rate K-3(0)/a(4) deviating from the universal three-body theory. The results of our simple model agree within a few percent with other theoretical works with van der Waals interaction and also the experimental data.