Quench dynamics of Bose-Einstein condensates in boxlike traps

Abstract

We investigate the nonequilibrium dynamics of two-dimensional Bose-Einstein condensates in boxlike traps with power-law potential boundaries by quenching the interatomic interactions. For both concave and convex potentials, we show that ring dark solitons can be excited during the quench dynamics. The modulation strength of the quench and the steepness of the boundary are two main factors affecting the evolution of the system. Five dynamic regimes are identified concerning the number of ring dark solitons excited in the condensate. For the situation without ring dark soliton excitations, the condensate undergoes damped radius oscillation. As far as the appearance of ring dark solitons, interesting structures arise from their decay. For the concave potential, the excitation patterns show a nested structure of vortex-antivortex pairs. For the convex potential, on the other hand, the dynamic excitation patterns display richer structures that have multiple transport behaviors.

6 pages, 5 figures

References in corpus (16)

• Experimental observation of oscillating and interacting matter wave dark solitons
• Emergence of order from turbulence in an isolated planar superfluid
• Collective emission of matter-wave jets from driven Bose-Einstein condensates
• Collective excitation of a Bose-Einstein condensate by modulation of the atomic scattering length
• Matter-wave solitons in radially periodic potentials
• Formation and Transformation of Vector-Solitons in Two-Species Bose-Einstein Condensates with Tunable Interaction
• Nonlinear Bose-Einstein-condensate Dynamics Induced by a Harmonic Modulation of the s-wave Scattering Length
• Motion of solitons in one-dimensional spin-orbit-coupled Bose-Einstein condensates
• Dynamics and modulation of ring dark soliton in 2D Bose-Einstein condensates with tunable interaction
• Creating solitons with controllable and near zero velocity in Bose-Einstein condensates
• Dynamical excitations in the collision of 2D Bose-Einstein condensates
• Matter-wave dark solitons in box-like traps
• Dynamics of vortex quadrupoles in nonrotating trapped Bose-Einstein condensate
• Pairwise Interactions of Ring Dark Solitons with Vortices and other Rings: Stationary States, Stability Features and Nonlinear Dynamics
• Influence of a dark-soliton on the reflection of a Bose-Einstein condensate by a square barrier
• Nonlinear Waves in an Experimentally Motivated Ring-shaped Bose-Einstein Condensate Setup

Cited by in corpus (4)

• Observation of self-patterned defect formation in atomic superfluids -- from ring dark solitons to vortex dipole necklaces
• Quench induced chaotic dynamics of Anderson localized interacting Bose-Einstein condensates in one dimension
• Structure and dynamics of binary Bose-Einstein condensates with vortex phase imprinting
• Dynamical nonlinear excitations induced by interaction quench in a two-dimensional box-trapped Bose-Einstein condensate