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Split vortices in optically coupled Bose-Einstein condensates
J. J. Garcia-Ripoll, V. M. Perez-Garcia, F. Sols
We study a rotating two-component Bose-Einstein condensate in which an optically induced Josephson coupling allows for population transfer between the two species. In a regime wher…
Temperature dependent shifts in collective excitations of a gaseous Bose-Einstein condensate
Juan Jose Garcia-Ripoll
The moment method is applied to the quantum theory for a trapped dilute gas, obtaining equations for the evolution of the cloud. These equations proof the existence of undamped osc…
Construction of exact solutions by spatial traslations in inhomogeneous Nonlinear Schrodinger equations. Applications to Bose-Einstein condensation
Juan J. Garcia-Ripoll, Victor M. Perez-Garcia, Vadym Vekslerchik
In this paper we study a general nonlinear Schrödinger equation with a time dependent harmonic potential. Despite the lack of traslational invariance we find a symmetry trasformati…
Structural instability of vortices in Bose-Einstein condensates
Juan J. Garcia-Ripoll, Gabriel Molina-Terriza, Victor M. Perez-Garcia +1
In this paper we study a gaseous Bose-Einstein condensate (BEC) and show that: (i) A minimum value of the interaction is needed for the existence of stable persistent currents. (ii…
Vortex bending and tightly packed vortex lattices in Bose-Einstein condensates
J. J. Garcia-Ripoll, V. M. Perez-Garcia
We study in detail the counterintuitive result that in elongated rotating Bose--Einstein condensates the ground state is composed of one or more vortex lines which bend even in com…