Confinement Induced Resonances in Spherical Shell Traps

• DOI: 10.48550/arxiv.2401.14946
• Publication Date: 2024-01-26
• Authors: C. Moritz Carmesin; Maxim A. Efremov
• Keywords: Spherical shell

We have computed exactly the energy spectrum and corresponding wave functions of two bosonic particles, which are confined in a spherically symmetric shell-shaped trap interact with each other via three-dimensional zero-range potential. Confinement induced resonances (CIRs), originating entirely from strong coupling relative center-of-mass motions identified as avoided crossings at certain values shell radius. By working close to found CIRs, these results offer new way enhance atom-atom interaction atomic gas by tuning only geometrical parameters shell.