Trimer and Tetramer Bound States in Heteronuclear Systems
| Autor: | Hans Werner Hammer, Christiane H. Schmickler, Emiko Hiyama |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Physics
Condensed Matter::Quantum Gases Nuclear Theory 010308 nuclear & particles physics FOS: Physical sciences Scattering length Trimer 01 natural sciences Molecular physics Atomic and Molecular Physics and Optics Nuclear Theory (nucl-th) Variational method Heteronuclear molecule Quantum Gases (cond-mat.quant-gas) 0103 physical sciences Atom Bound state Physics::Atomic and Molecular Clusters Physics::Atomic Physics 010306 general physics Condensed Matter - Quantum Gases Scaling Boson |
| Popis: | The Efimov effect in heteronuclear cold atomic systems is experimentally more easily accessible than the Efimov effect for identical atoms, because of the potentially smaller scaling factor. We focus on the case of two or three heavy identical bosons and another atom. The former case was recently observed in a mixture of 133Cs and 6Li atoms. We employ the Gaussian Expansion Method as developed by Hiyama, Kino et al.. This is a variational method that uses Gaussians that are distributed geometrically over a chosen range. Supplemental calculations are performed using the Skorniakov-Ter-Martirosian equation. Blume et al. previously investigated the scaling properties of heteronuclear systems in the unitary limit and at the three-body breakup threshold. We have completed this picture by calculating the behaviour on the positive scattering length side of the Efimov plot, focussing on the dimer threshold. 4 pages, 4 figures, proceedings of EFB23; corrected typos |
| Databáze: | OpenAIRE |
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