| Texto completo | |
| Autor(es): |
Wu, Feng
;
Frederico, T.
;
Higa, R.
;
van Kolck, U.
Número total de Autores: 4
|
| Tipo de documento: | Artigo Científico |
| Fonte: | PHYSICAL REVIEW A; v. 109, n. 4, p. 13-pg., 2024-04-01. |
| Resumo | |
Near two -body unitarity, the three -boson system is characterized by an approximate discrete scale invariance manifest in a geometric tower of bound states (the Efimov effect). In the absence of a strong four -body force, the four -boson system has two states associated with each Efimov state, one very nearly unstable, the other several times deeper. We study correlations between the excited- and ground -state properties, such as binding energies and radii, up to next -to -leading order in an effective field theory for short-range forces. We obtain the parameters in these correlations from similar correlations arising from existing precise calculations based on short-range potentials. We also derive correlations among excited -state properties that emerge from the proximity of the state to the break-up threshold into a boson and a three -boson bound state, using an effective field theory for "halo" states. (AU) | |
| Processo FAPESP: | 19/07767-1 - Reações nucleares com núcleos fracamente ligados ou com estrutura de cluster, radioativos e estáveis |
| Beneficiário: | Leandro Romero Gasques |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |
| 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 |
| Processo FAPESP: | 20/04867-2 - Física e instrumentação de altas energias com o LHC-CERN |
| Beneficiário: | Marcelo Gameiro Munhoz |
| Modalidade de apoio: | Auxílio à Pesquisa - Projetos Especiais |