Shape deformations and angular momentum transfer in trapped Bose-Einstein condensates

Abstract

Angular momentum can be transferred to a trapped Bose-Einstein condensate by distorting its shape with an external rotating field, provided the rotational frequency is larger than a critical frequency fixed by the energy and angular momentum of the excited states of the system. By using the Gross-Pitaevskii equation and sum rules, we explore the dependence of such a critical frequency on the multipolarity of the excitations and the asymmetry of the confining potential. We also discuss its possible relevance for vortex nucleation in rotating traps.

4 pages revtex, 2 figures included

References in corpus (7)

• Vortex formation in a stirred Bose-Einstein condensate
• Vortices in a Bose-Einstein Condensate
• Evidence for a critical velocity in a Bose-Einstein condensed gas
• Measurement of the angular momentum of a rotating Bose-Einstein condensate
• Vortex stability of interacting Bose-Einstein condensates confined in anisotropic harmonic traps
• Dissipation and Vortex Creation in Bose-Einstein Condensed Gases
• Nucleation of vortex arrays in rotating anisotropic Bose-Einstein condensates

Cited by in corpus (41)

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• Vortex Nucleation in a Stirred Bose-Einstein Condensate
• Stationary states of a rotating Bose-Einstein condensate: routes to vortex nucleation
• Driving Bose-Einstein condensate vorticity with a rotating normal cloud
• Vortex lattice formation in a rotating Bose-Einstein condensate
• Vortex nucleation in Bose-Einstein condensates in an oblate, purely magnetic potential
• Vortices in multicomponent Bose-Einstein condensates
• Dynamical Creation of Fractionalized Vortices and Vortex Lattices
• Dynamic instability of a rotating Bose-Einstein condensate
• Formation and Decay of Vortex Lattices in Bose-Einstein Condensates at Finite Temperatures
• The nucleation, growth and stabilization of vortex lattices
• Vortex bending and tightly packed vortex lattices in Bose-Einstein condensates
• Vortex nucleation and hysteresis phenomena in rotating Bose-Einstein condensates
• Collapse of attractive Bose-Einstein condensed vortex states in a cylindrical trap
• Fermi Gases in Slowly Rotating Traps: Superfluid vs Collisional Hydrodynamics
• Local vortex nucleation and the surface mode spectrum of large condensates
• Dynamical instability of a condensate induced by a rotating thermal gas
• Split vortices in optically coupled Bose-Einstein condensates
• Formation of a vortex lattice in a rotating BCS Fermi gas
• Formation and structure of vortex lattices in a rotating double-well Bose-Einstein condensate
• Structure and dynamics of a rotating superfluid Bose-Fermi mixture
• Vortex excitation in a stirred toroidal Bose-Einstein condensate
• Surface modes and vortex formation in dilute Bose-Einstein condensates at finite temperatures
• Destroying superfluidity by rotating a Fermi gas at unitarity
• Response of an atomic Bose-Einstein condensate to a rotating elliptical trap
• Arbitrary-angle rotation of the polarization of a dipolar Bose-Einstein condensate
• Theory of vortex-lattice melting in a one-dimensional optical lattice
• Unitary polarized Fermi gas under adiabatic rotation
• Vortex phase diagram in trapped Bose-Einstein condensation
• Castaing Instability and Precessing Domains in Confined Alkali Gases
• Hysteresis effects in rotating Bose-Einstein condensates
• Adiabatic preparation of vortex lattices
• Vortex Dynamics Near the Surface of a Bose-Einstein Condensate
• Rotating a Bose-Einstein condensate by shaking an anharmonic axisymmetric magnetic potential
• Vortices in nonlocal Gross-Pitaevskii equation
• Dissipative dynamics of vortex arrays in trapped Bose-condensed gases: neutron stars physics on $\mu$K scale
• Critical angular velocity for vortex lines formation
• Vortices in Bose-Einstein Condensates: Theory
• Vortex nucleation through edge states in finite Bose-Einstein condensates
• Fluctuation-Driven Vortex Fractionalization in Topologically Ordered Superfluids of Cold Atoms
• Vortex nucleations in spinor Bose condensates under localized synthetic magnetic fields