Spin waves in a Bose-condensed atomic spin chain

Details Spin waves in a Bose-condensed atomic spin chain Spin waves in a Bose-condensed atomic spin chain

2001-09-21

arxiv.org/abs/cond-mat/0109415v1

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 3 figures, REVTeX4

Scientific paper

10.1103/PhysRevLett.88.060401

The spin dynamics of atomic Bose-Einstein condensates confined in a one-dimensional optical lattice is studied. The condensates at each lattice site behave like spin magnets that can interact with each other through both the light-induced dipole-dipole interaction and the static magnetic dipole-dipole interaction. We show how these site-to-site dipolar interactions can distort the ground state spin orientations and lead to the excitation of spin waves. The dispersion relation of the spin waves is studied and possible detection schemes are proposed.

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