dc.contributor.author |
Gautam, S. |
|
dc.contributor.author |
Adhikari, S.K. |
|
dc.date.accessioned |
2019-12-05T13:32:54Z |
|
dc.date.available |
2019-12-05T13:32:54Z |
|
dc.date.issued |
2019-12-05 |
|
dc.identifier.uri |
http://localhost:8080/xmlui/handle/123456789/1415 |
|
dc.description.abstract |
The perturbative Lee-Huang-Yang (LHY) interaction proportional to n
3/2
, where n is the density, creates an infinitely repulsive potential at the center of a Bose-Einstein condensate (BEC) with net attraction, which stops the
collapse to form a self-bound state in a dipolar BEC and in a binary BEC. However, recent microscopic calculations
of the non-perturbative beyond-mean-field (BMF) interaction indicate that the LHY interaction is valid only for very
small values of gas parameter x. We show that a realistic non-perturbative BMF interaction can stop collapse and form
a self-bound state only in a weakly attractive binary BEC with small x values (x / 0.01), whereas the perturbative
LHY interaction stops collapse for all attractions. We demonstrate these aspects using an analytic BMF interaction
with appropriate weak-coupling LHY and strong coupling limits. |
en_US |
dc.language.iso |
en_US |
en_US |
dc.subject |
Self-bound binary Bose-Einstein condensate |
en_US |
dc.subject |
Beyond-mean-field interaction |
en_US |
dc.subject |
Lee-Huang-Yang interaction |
en_US |
dc.subject |
Collapse instability |
en_US |
dc.title |
Limitation of the Lee-Huang-Yang interaction in forming a self-bound state in Bose-Einstein condensates |
en_US |
dc.type |
Article |
en_US |