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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

A self-bound matter-wave boson-fermion quantum ball

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Autor(es):
Adhikari, S. K.
Número total de Autores: 1
Tipo de documento: Artigo Científico
Fonte: LASER PHYSICS LETTERS; v. 15, n. 9 SEP 2018.
Citações Web of Science: 2
Resumo

We demonstrate the possibility of creating a self-bound stable three-dimensional matter-wave spherical boson-fermion quantum ball in the presence of an attractive boson-fermion interaction and a small repulsive three-boson interaction. The two-boson interaction could be attractive or repulsive whereas the fermions are taken to be in a fully-paired super-fluid state in the Bardeen-Cooper-Schreifer (quasi-noninteracting weak-coupling) limit. We also include the Lee-Huang-Yang (LHY) correction to a repulsive bosonic interaction term. The repulsive three-boson interaction and the LHY correction can stop a global collapse while acting jointly or separately. The present study is based on a mean-field model, where the bosons are subject to a Gross-Pitaevskii (GP) Lagrangian functional and the fully-paired fermions are described by a Galilean-invariant density functional Lagrangian. The boson-fermion interaction is taken to be the mean-field Hartree interaction, quite similar to the interaction term in the GP equation. The study is illustrated by a variational and a numerical solution of the mean-field model for the boson-fermion Li-7-Li-6 system. (AU)

Processo FAPESP: 16/01343-7 - ICTP Instituto Sul-Americano para Física Fundamental: um centro regional para física teórica
Beneficiário:Nathan Jacob Berkovits
Linha de fomento: Auxílio à Pesquisa - Temático
Processo FAPESP: 12/00451-0 - Estudo de propriedades do condensado de Bose-Einstein: átomos dipolares e condensado de férmions
Beneficiário:Sadhan Kumar Adhikari
Linha de fomento: Auxílio à Pesquisa - Temático