Kibble-Zurek mechanism in a trapped ferromagnetic Bose-Einstein condensate
arXiv:1301.4770 · doi:10.1088/0953-8984/25/40/404212
Abstract
Spontaneous spin vortex formation in the magnetic phase transition of a trapped spin-1 Bose-Einstein condensate is investigated using mean-field theory. In a harmonic trapping potential, an inhomogeneous atomic density leads to spatial variations of the critical point, magnetization time scale, and spin correlation length. The Kibble-Zurek phenomena are shown to emerge even in such inhomogeneous systems, when the quench of the quadratic Zeeman energy is fast enough. For slow quench, the magnetized region gradually expands from the center of the trap pushing out spin vortices, which hinders the Kibble-Zurek mechanism from occurring. A harmonic trap with a plug potential is also taken into account.
7 pages, 4 figures, 3 movies
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Cited by in corpus (17)
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- Kibble-Zurek Mechanism in a Spin-1 Bose-Einstein Condensate
- Quantum phase transition dynamics in the two-dimensional transverse-field Ising model
- Causality and non-equilibrium second-order phase transitions in inhomogeneous systems
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- Characterizing the energy gap and demonstrating an adiabatic quench in an interacting spin system
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- Non-adiabatic quantum phase transition in a trapped spinor condensate
- Dynamic hysteresis from bistability in an antiferromagnetic spinor condensate
- Coleman-Weinberg mechanism in spinor Bose-Einstein condensates