Two-dimensional expansion of a condensed dense Bose gas

Autor(es)

Annibale, E. S. ^{[1, 2]} ; Gammal, A. ^[1] ; Ziegler, K. ^[2]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Inst Fis, BR-05508090 Sao Paulo - Brazil

^[2] Univ Augsburg, Inst Phys, D-86135 Augsburg - Germany

• Tipo de documento: Artigo Científico
• Fonte: PHYSICA D-NONLINEAR PHENOMENA; v. 307, p. 77-81, JUL 1 2015.
• Citações Web of Science: 0

Resumo

We study the expansion dynamics of a condensate in a strongly interacting Bose gas in the presence of an obstacle. Our focus is on the generation of shock waves after the Bose gas has passed the obstacle. The strongly interacting Bose gas is described in the slave-boson representation. A saddle-point approximation provides a nonlinear equation of motion for the macroscopic wave function, analogous to the Gross-Pitaevskii equation of a weakly interacting Bose gas but with different nonlinearity. We compare the results with the Gross-Pitaevskii dynamics of a weakly interacting Bose gas and find a similar behavior with a slower behavior of the strongly interacting system. (C) 2015 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 11/18998-2 - Dinâmica de sistemas de muitos corpos III
• Beneficiário: Mahir Saleh Hussein
• Modalidade de apoio: Auxílio à Pesquisa - Temático