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.
Three interacting atoms in a one-dimensional trap: A benchmark system for computational approaches / D'Amico, Pino; Rontani, Massimo. - In: JOURNAL OF PHYSICS. B, ATOMIC MOLECULAR AND OPTICAL PHYSICS. - ISSN 0953-4075. - 47:(2014), pp. 065303-1-065303-22. [10.1088/0953-4075/47/6/065303]
Three interacting atoms in a one-dimensional trap: A benchmark system for computational approaches
D'AMICO, PINO;RONTANI, Massimo
2014
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.
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