Effect of thermal fluctuations on spin degrees of freedom in spinor Bose-Einstein condensates
arXiv:cond-mat/0602119 · doi:10.1103/PhysRevA.74.023624
Abstract
We consider the effect of thermal fluctuations on rotating spinor F=1 condensates in axially-symmetric vortex phases, when all the three hyperfine states are populated. We show that the relative phase among different components of the order parameter can fluctuate strongly due to the weakness of the interaction in the spin channel. These fluctuations can be significant even at low temperatures. Fluctuations of relative phase lead to significant fluctuations of the local transverse magnetization of the condensate. We demonstrate that these fluctuations are much more pronounced for the antiferromagnetic state than for the ferromagnetic one.
arXiv comment5 pages, 2 figures; final version, accepted for publication in Phys. Rev. A
References in corpus (20)
- Spinor Bose Condensates in Optical Traps
- Spin domains in ground state spinor Bose-Einstein condensates
- Bose-Einstein condensation with internal degrees of freedom in alkali atom gases
- Berezinskii-Kosterlitz-Thouless Crossover in a Trapped Atomic Gas
- Coherent spinor dynamics in a spin-1 Bose condensate
- An Atom Michelson Interferometer on a Chip Using a Bose-Einstein Condensate
- Vortices in multicomponent Bose-Einstein condensates
- Direct, Non-Destructive Imaging of Magnetization in a Spin-1 Bose Gas
- Observation of Phase Defects in Quasi-2D Bose-Einstein Condensates
- Mermin-Ho vortex in ferromagnetic spinor Bose-Einstein condensates
- Thermal activation of vortex-antivortex pairs in quasi-2D Bose-Einstein condensates
- Axisymmetric Vortices in Spinor Bose-Einstein Condensates under Rotation
- Quantum Hall states and boson triplet condensate for rotating spin-1 bosons
- Observable Signature of the Berezinskii-Kosterlitz-Thouless Transition in a Planar Lattice of Bose-Einstein Condensates
- Finite temperature theory of the trapped two dimensional Bose gas
- Vortex structure in spinor F=2 Bose-Einstein condensates
- Transition from Bose-Einstein Condensate to Berezinskii-Kosterlitz-Thouless Phase
- Seeing zeros of random polynomials: quantized vortices in the ideal Bose gas
- Cyclic phase in F=2 spinor condensate: Long-range order, kinks, and roughening transition
- Thermal fluctuations of vortex clusters in quasi-two-dimensional Bose-Einstein condensate