Dynamical Casimir effect for magnons in a spinor Bose-Einstein condensate
arXiv:0805.2210 · doi:10.1103/PhysRevA.78.033605
Abstract
Magnon excitation in a spinor Bose-Einstein condensate by a driven magnetic field is shown to have a close analogy with the dynamical Casimir effect. A time-dependent external magnetic field amplifies quantum fluctuations in the magnetic ground state of the condensate, leading to magnetization of the system. The magnetization occurs in a direction perpendicular to the magnetic field breaking the rotation symmetry. This phenomenon is numerically demonstrated and the excited quantum field is shown to be squeezed.
8 pages, 3 figures
References in corpus (10)
- Spontaneous symmetry breaking in a quenched ferromagnetic spinor Bose condensate
- Spinor Dynamics in an Antiferromagnetic Spin-1 Condensate
- Quantum quenches in a spinor condensate
- A novel experimental approach for the detection of the dynamic Casimir effect
- 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
- Detectability of dissipative motion in quantum vacuum via superradiance
- Topological defect formation in quenched ferromagnetic Bose-Einstein condensates
- Hamiltonian approach to the dynamical Casimir effect
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