Spinor condensate of ${}^{87}$Rb as a dipolar gas

Abstract

We consider a spinor condensate of ${}^{87}$Rb atoms in F=1 hyperfine state confined in an optical dipole trap. Putting initially all atoms in $m_F=0$ component we find that the system evolves towards a state of thermal equilibrium with kinetic energy equally distributed among all magnetic components. We show that this process is dominated by the dipolar interaction of magnetic spins rather than spin mixing contact potential. Our results show that because of a dynamical separation of magnetic components the spin mixing dynamics in ${}^{87}$Rb condensate is governed by dipolar interaction which plays no role in a single component rubidium system in a magnetic trap.

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• How to observe dipolar effects in spinor Bose-Einstein condensates
• Finite-temperature trapped dipolar Bose gas
• Tunable dipolar resonances and Einstein-de Haas effect in a Rb-87 atoms condensate
• Spin squeezing in dipolar spinor condensates
• Thermal fluctuations and quantum phase transition in antiferromagnetic Bose-Einstein condensates
• Resonant dynamics of chromium condensates
• Creation of topological states of a Bose-Einstein condensate in a plaquette
• Spin distillation cooling of ultracold Bose gases