Three interacting atoms in a one-dimensional trap: A benchmark system for computational approaches
arXiv:1310.3829 · doi:10.1088/0953-4075/47/6/065303
Abstract
We provide an accurate calculation of the energy spectrum of three atoms interacting through a contact force in a one-dimensional harmonic trap, considering both spinful fermions and spinless bosons. We use fermionic energies as a benchmark for exact-diagonalization technique (also known as full configuration interaction), which is found to slowly converge in the case of strong interatomic attraction.
To appear in Journal of Physics B: Atomic, Molecular and Optical Physics