7 research outputs found
Spin correlation and Discrete symmetry in Spinor Bose-Einstein Condensates
We study spin correlations in Bose-Einstein condensates of spin 1 bosons with
scatterings dominated by a total spin equal 2 channel. We show the low energy
spin dynamics in the system can be mapped into an nonlinear sigma
model(NLM). at the zero magnetic field limit and in the
presence of weak magnetic fields. In an ordered phase, the ground state has a
hidden symmetry and is degenerate under the group . We explore consequences of the hidden symmetry and propose some
measurements to probe it.Comment: 4 pages; published version in Phys. Rev. Lett. vol 87, 080401-1(2001