Fluctuation- and interaction-induced instability of dark solitons in single and binary condensates

Show simple item record

dc.contributor.author Roy, Arko
dc.contributor.author Angom, D.
dc.date.accessioned 2015-04-23T16:46:43Z
dc.date.available 2015-04-23T16:46:43Z
dc.date.issued 2014-08
dc.identifier.citation Roy, Arko and D., Angom, “Fluctuation- and interaction-induced instability of dark solitons in single and binary condensates”, Physical Review A, DOI: 10.1103/PhysRevA.90.023612, vol. 90, no. 2, Aug. 2014. en_US
dc.identifier.issn 0031-9007
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/1697
dc.identifier.uri https://doi.org/10.1103/PhysRevA.90.023612
dc.description.abstract We show that the presence of a soliton in a single-species condensate, at zero temperature, enhances the quantum depletion sufficiently enough to induce dynamical instability of the system. We also predict that for two-species condensates, two Goldstone modes emerge in the excitation spectrum at phase separation. Of these, one is due to the presence of the soliton. We use Hartree-Fock-Bogoliubov theory with Popov approximation to examine the mode evolution, and demonstrate that when the anomalous mode collides with a higher energy mode it renders the solitonic state oscillatory unstable. We also report a soliton-induced change in the topology of the density profiles of the two-species condensates at phase separation. en_US
dc.description.statementofresponsibility by Arko Roy and Angom D.
dc.format.extent vol. 90, no. 2
dc.language.iso en en_US
dc.publisher American Physical Society en_US
dc.subject Excitation spectrum en_US
dc.subject Hartree-Fock-Bogoliubov en_US
dc.subject Single-species condensate en_US
dc.title Fluctuation- and interaction-induced instability of dark solitons in single and binary condensates en_US
dc.type Article en_US
dc.relation.journal Physical Review A


Files in this item

Files Size Format View

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record

Search Digital Repository


Browse

My Account