Chiral confinement in quasirelativistic Bose-Einstein condensates

Details Chiral confinement in quasirelativistic Bose-Einstein condensates Chiral confinement in quasirelativistic Bose-Einstein condensates

2009-08-25

arxiv.org/abs/0908.3631v1

Physics

Condensed Matter

Quantum Gases

4 pages

Scientific paper

In the presence of a laser-induced spin-orbit coupling an interacting ultra cold spinor Bose-Einstein condensate may acquire a quasi-relativistic character described by a non-linear Dirac-like equation. We show that as a result of the spin-orbit coupling and the non-linearity the condensate may become self-trapped, resembling the so-called chiral confinement, previously studied in the context of the massive Thirring model. We first consider 1D geometries where the self-confined condensates present an intriguing sinusoidal dependence on the inter-particle interactions. We further show that multi-dimensional chiral-confinement is also possible under appropriate feasible laser arrangements, and discuss the properties of 2D and 3D condensates, which differ significantly from the 1D case.

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