Spin dynamics of a trapped spin-1 Bose Gas above the Bose-Einstein transition temperature

Abstract

We study collective spin oscillations in a spin-1 Bose gas above the Bose-Einstein transition temperature. Starting from the Heisenberg equation of motion, we derive a kinetic equation describing the dynamics of a thermal gas with the spin-1 degree of freedom. Applying the moment method to the kinetic equation, we study spin-wave collective modes with dipole symmetry. The dipole modes in the spin-1 system are found to be classified into the three type of modes. The frequency and damping rate are obtained as functions of the peak density. The damping rate is characterized by three relaxation times associated with collisions.

19 pages, 5 figure

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Cited by in corpus (9)

• Spinor Bose-Einstein condensates
• Dipolar and spinor bosonic systems
• Spinor dynamics in an antiferromagnetic spin-1 thermal Bose gas
• Coherent heteronuclear spin dynamics in an ultracold spin-1 mixture
• Engineering spin waves in a high-spin ultracold Fermi gas
• Coherent spin mixing dynamics in thermal ${}^{87}$Rb spin-1 and spin-2 gases
• Zero and First Sound in Normal Fermi Systems
• Population Dynamics of a Spin-1 Bose Gas Above the Bose-Einstein Transition Temperature
• General collisionless kinetic approach to studying excitations in arbitrary-spin quantum atomic gases