Goldstone modes and bifurcations in phase-separated binary condensates at finite temperature

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dc.contributor.author Roy, Arko
dc.contributor.author Gautam, S.
dc.contributor.author Angom, D.
dc.date.accessioned 2015-04-23T17:09:31Z
dc.date.available 2015-04-23T17:09:31Z
dc.date.issued 2014-01
dc.identifier.citation Roy, Arko Gautamand, S. and D., Angom, “Goldstone modes and bifurcations in phase-separated binary condensates at finite temperature”, Physical Review A, DOI: 10.1103/PhysRevA.89.013617, vol. 89, no. 1, Jan. 2014. en_US
dc.identifier.issn 0031-9007
dc.identifier.uri http://dx.doi.org/ 10.1103/PhysRevA.89.013617
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/1698
dc.description.abstract We show that the third Goldstone mode, which emerges in binary condensates at phase separation, persists to higher interspecies interaction for density profiles where one component is surrounded on both sides by the other component. This is not the case with symmetry-broken density profiles where one species is entirely to the left and the other is entirely to the right. We, then, use Hartree-Fock-Bogoliubov theory with Popov approximation to examine the mode evolution at T≠0 and demonstrate the existence of mode bifurcation near the critical temperature. The Kohn mode, however, exhibits deviation from the natural frequency at finite temperatures after the phase separation. This is due to the exclusion of the noncondensate atoms in the dynamics. en_US
dc.description.statementofresponsibility by Arko Roy, S. Gautamand and Angom D.
dc.format.extent Vol. 89, No. 1
dc.language.iso en en_US
dc.publisher American Physical Society en_US
dc.subject Critical temperature en_US
dc.subject Goldstone en_US
dc.subject Interspecies en_US
dc.subject Noncondensate atoms en_US
dc.title Goldstone modes and bifurcations in phase-separated binary condensates at finite temperature en_US
dc.type Article en_US
dc.relation.journal Physical Review A


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