Arko Roy

Condensates in double-well potential with synthetic gauge potentials and vortex seeding

Abstract We demonstrate an enhancement in the vortex generation when artificial gauge potential is introduced to condensates confined in a double well potential. This is due to the lower energy required to create a vortex in the low condensate density region within the barrier. Furthermore, we study the transport of vortices between the two wells, and show that the traverse time for vortices is longer for the lower height of the well. We also show that the critical value of synthetic magnetic field to inject vortices into the bulk of the condensate is lower in the double-well potential compared to the harmonic confining potential.

Collective modes in multicomponent condensates with anisotropy

We report the effects of anisotropy in the confining potential on two component Bose-Einstein condensates (TBECs) through the properties of the low energy quasiparticle excitations. Starting from generalized Gross Pitaevskii equation, we obtain the Bogoliubov de-Gennes (BdG) equation for TBECs using the Hartree-Fock-Bogoliubov (HFB) theory. Based on this theory, we present the influence of radial anisotropy on TBECs in the immiscible or the phase-separated domain. In particular, the TBECs of

Finite temperature expansion dynamics of Bose-Einstein condensates in ring traps

^{85}

Dynamics of phase separation in two-species Bose-Einstein condensates with vortices

Rb~-

Bifurcations, stability and mode evolution in segregated quasi-2D condensate mixtures

^{87}

FACt: FORTRAN toolbox for calculating fluctuations in atomic condensates

Rb and

Interacting bosons in two-dimensional lattices with localized dissipation.

^{133}

Splitting of singly and doubly quantized composite vortices in two-component Bose-Einstein condensates

Cs~-

On the mode evolution study of segregated condensate mixtures in quasi-2D confinement

^{87}

Finite temperature expansion dynamics of Bose-Einstein condensates

Rb TBECs are chosen as specific examples of the two possible interface geometries, shell-structured and side by side, in the immiscible domain. We also show that the dispersion relation for the TBEC shell-structured interface has two branches, and anisotropy modifies the energy scale and structure of the two branches.