Domain wall dynamics of multi-domain spin structures in an ultracold Rb-87 gas

We explore dynamics of a pseudo-spin-½ non-degenerate gas of Rb-87 atoms initialized in a state with three spin domains. We experimentally study how the interplay of coherent spin currents and diffusive pressure drives motion of the domain walls and dynamic generation of new domain walls as the system evolves in a spin-independent potential. Further, we explore the roles of symmetry and domain size on spin transport by comparing the dynamics of these domain walls with a two domain system in which the single wall is initialized away from the trap center.