Tetramer bound states in heteronuclear systems

C. H. Schmickler, H. W. Hammer, E. Hiyama

研究成果: ジャーナルへの寄稿記事

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We calculate the universal spectrum of trimer and tetramer states in heteronuclear mixtures of ultracold atoms with different masses in the vicinity of the heavy-light dimer threshold. To extract the energies, we solve the three- and four-body problem for simple two- and three-body potentials tuned to the universal region using the Gaussian expansion method. We focus on the case of one light particle of mass m and two or three heavy bosons of mass M with resonant heavy-light interactions. We find that trimer and tetramer cross into the heavy-light dimer threshold at almost the same point and that as the mass ratio M/m decreases, the distance between the thresholds for trimer and tetramer states becomes smaller. We also comment on the possibility of observing exotic three-body states consisting of a dimer and two atoms in this region and compare with previous work.

元の言語英語
記事番号052710
ジャーナルPhysical Review A
95
発行部数5
DOI
出版物ステータス出版済み - 5 30 2017
外部発表Yes

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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