Collapse and stable self-trapping for Bose-Einstein condensates with 1-r^b type attractive interatomic interaction potential - Nonlinear Sciences > Pattern Formation and SolitonsReportar como inadecuado




Collapse and stable self-trapping for Bose-Einstein condensates with 1-r^b type attractive interatomic interaction potential - Nonlinear Sciences > Pattern Formation and Solitons - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

Abstract: We consider dynamics of Bose-Einstein condensates with long-range attractiveinteraction proportional to $1-r^b$ and arbitrary angular dependence. It isshown exactly that collapse of Bose-Einstein condensate without contactinteractions is possible only for $b\ge 2$. Case $b=2$ is critical and requiresnumber of particles to exceed critical value to allow collapse. Criticalcollapse in that case is strong one trapping into collapsing region a finitenumber of particles.Case $b>2$ is supercritical with expected weak collapse which traps rapidlydecreasing number of particles during approach to collapse. For $b<2$singularity at $r=0$ is not strong enough to allow collapse but attractive$1-r^b$ interaction admits stable self-trapping even in absence of externaltrapping potential.



Autor: Pavel M. Lushnikov

Fuente: https://arxiv.org/







Documentos relacionados