| Texto completo | |
| Autor(es): |
Shalchi, M. A.
;
Yamashita, M. T.
;
Hadizadeh, M. R.
;
Garrido, E.
;
Tomio, Lauro
;
Frederico, T.
Número total de Autores: 6
|
| Tipo de documento: | Artigo Científico |
| Fonte: | PHYSICAL REVIEW A; v. 97, n. 1, p. 6-pg., 2018-01-05. |
| Resumo | |
The discrete Efimov scaling behavior, well known in the low-energy spectrum of three-body bound systems for large scattering lengths (unitary limit), is identified in the energy dependence of an atom-molecule elastic cross section in mass-imbalanced systems. That happens in the collision of a heavy atom with mass m(H) with a weakly bound dimer formed by the heavy atom and a lighter one with mass m(L) << m(H). Approaching the heavy-light unitary limit, the s-wave elastic cross section sigma will present a sequence of zeros or minima at collision energies following closely the Efimov geometrical law. Our results, obtained with Faddeev calculations and supplemented by a Born-Oppenheimer analysis, open a perspective to detecting the discrete scaling behavior from low-energy scattering data, which is timely in view of the ongoing experiments with ultracold binary mixtures having strong mass asymmetries, such as lithium and cesium or lithium and ytterbium. (AU) | |
| Processo FAPESP: | 16/01816-2 - Transição Dimensional em Sistemas de Poucos Átomos |
| Beneficiário: | Marcelo Takeshi Yamashita |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 17/05660-0 - Estudos teóricos da estrutura e reações de núcleos exóticos e sistemas de muitos corpos |
| Beneficiário: | Brett Vern Carlson |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |