Topological defect formation in quenched ferromagnetic Bose-Einstein condensates
arXiv:cond-mat/0610862 · doi:10.1103/PhysRevA.75.013621
Abstract
We study the dynamics of the quantum phase transition of a ferromagnetic spin-1 Bose-Einstein condensate from the polar phase to the broken-axisymmetry phase by changing magnetic field, and find the spontaneous formation of spinor domain walls followed by the creation of polar-core spin vortices. We also find that the spin textures depend very sensitively on the initial noise distribution, and that an anisotropic and colored initial noise is needed to reproduce the Berkeley experiment [Sadler et al., Nature 443, 312 (2006)]. The dynamics of vortex nucleation and the number of created vortices depend also on the manner in which the magnetic field is changed. We point out an analogy between the formation of spin vortices from domain walls in a spinor BEC and that of vortex-antivortex pairs from dark solitons in a scalar BEC.
10 pages, 11 figures
References in corpus (2)
Cited by in corpus (12)
- Quantum quenches in a spinor condensate
- Kibble-Zurek mechanism in a quenched ferromagnetic Bose-Einstein condensate
- Dynamics of a quantum phase transition in a ferromagnetic Bose-Einstein condensate
- Vortex quantum creation and winding number scaling in a quenched spinor Bose gas
- Quantum Noise, Scaling and Domain Formation in a Spinor BEC
- Excited spin states and phase separation in spinor Bose-Einstein condensates
- Dynamical models and the phase ordering kinetics of the s=1 spinor condensate
- Field sweep rate dependence of magnetic domain patterns: Numerical simulations for a simple Ising-like model
- How to fix a broken symmetry: Quantum dynamics of symmetry restoration in a ferromagnetic Bose-Einstein condensate
- Spin dynamics and structure formation in a spin-1 condensate in a magnetic field
- Anisotropic Instabilities in Trapped Spinor Bose-Einstein Condensates
- Analog cosmology with spinor Bose-Einstein condensates