Confinement-Induced Resonances in Spherical Shell Traps
Quantum Physics
2025-07-01 v2
Abstract
The energy spectrum and corresponding wave functions of two bosonic particles confined in a spherically symmetric shell trap and interacting via a three-dimensional zero-range potential are computed. Confinement-induced resonances, originating entirely from the strong coupling of the relative and center-of-mass motions of the two particles, are identified as avoided crossings for certain values of the shell radius. By working close to the found resonances, these results offer a new way to control the atom-atom interaction in an atomic gas by tuning only the geometrical parameters of the shell.
Cite
@article{arxiv.2401.14946,
title = {Confinement-Induced Resonances in Spherical Shell Traps},
author = {C. Moritz Carmesin and Maxim A. Efremov},
journal= {arXiv preprint arXiv:2401.14946},
year = {2025}
}