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Now showing items 1-9 of 9

Acoustic radiation from vortex-barrier interaction in atomic Bose-Einstein condensate

Suthar, Kuldeep; Roy, Arko; Angom, D. (Cornell University Library, 2014-05)

We examine the dynamics of a vortex dipole in the Bose-Einstein condensates (BECs) of trapped dilute atomic gases at zero temperature in the presence of a Gaussian barrier potential. The density-anisotropy induced by the ...
Condensates in double-well potential with synthetic gauge potentials and vortex seeding

Bai, Rukmani; Roy, Arko; Angom, D.; Muruganandam, P. (Cornell University Library, 2017-05)
Dynamics of phase separation in two species Bose-Einstein condensates with vortices

Bandyopadhyay, Soumik; Roy, Arko; Angom, D. (Cornell University Library, 2017-02)

We examine the dynamics associated with the miscibility-immiscibility transition of trapped two-component Bose-Einstein condensates (TBECs) of dilute atomic gases in presence of vortices. In particular, we consider TBECs ...
Evolution of goldstone mode in binary condensate mixtures

Roy, Arko; Gautam, S.; Angom, D. (Cornell University Library, 2015-01)

We show that the third Goldstone mode in the two-species condensate mixtures, which emerges at phase-separation, gets hardened when the confining potentials have separated trap centers. The {\em sandwich} type condensate ...
Finite temperature dynamics of vortices in Bose-Einstein condensates

Gautam, S.; Roy, Arko; Mukerjee, Subroto (Cornell University Library, 2013-10)

We study the dynamics of a single and a pair of vortices in quasi two-dimensional Bose-Einstein condensates at finite temperatures. We use the stochastic Gross-Pitaevskii equation, which is the Langevin equation for the ...
Fluctuation and interaction induced instability of dark solitons in single and binary condensates

Roy, Arko; Angom, D. (American Physical Society, 2014-07)

We show that the presence of soliton in a single-species condensate, at zero temperature, enhances the quantum depletion sufficient enough to induce dynamical instability of the system. We also predict that for two-species ...
Fluctuation driven topological transition of binary condensates in optical lattices

Suthar, Kishan; Roy, Arko; Angom, D. (Cornell University Library, 2014-11)

We show the emergence of a third Goldstone mode in binary condensates at the phase-separation in quasi-1D optical lattices. We develop the coupled discrete nonlinear Schr\"odinger equations (DNLSEs) using Hartree-Fock-Bogoliubov ...
Goldstone modes and bifurcations in phase-separated binary condensates at finite temperature

Roy, Arko; Gautam, S.; Angom, D. (American Physical Society, 2013-01)

We show that the third Goldstone mode, which emerges in binary condensates at phase-separation, persists to higher inter-species interaction for density profiles where one component is surrounded on both sides by the other ...
Reorganization of Kohn mode from harmonic to toroidal trap

Roy, Arko; Angom, D. (Cornell University Library, 2015-11)

We report the structural transformation of Kohn mode, from radial to circular one, in Bose-Einstein condensates as the harmonic confining potential is transformed to a toroidal one. A change which translates to modification ...

Now showing items 1-9 of 9

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