Jahn-Teller induced Berry phase in spin-orbit coupled Bose-Einstein condensates

Details Jahn-Teller induced Berry phase in spin-orbit coupled Bose-Einstein condensates Jahn-Teller induced Berry phase in spin-orbit coupled Bose-Einstein condensates

2008-12-09

arxiv.org/abs/0812.1725v2

Phys. Rev. A 79, 043627 (2009)

Physics

Quantum Physics

9 pages, 7 figures. Published version

Scientific paper

We demonstrate that Berry phases may greatly affect the dynamics of spin-orbit coupled Bose-Einstein condensates. The effective model Hamiltonian under consideration is shown to be equivalent to the Exe Jahn-Teller model first introduced in molecular physics. The corresponding conical intersection is identified and the Berry phase acquired for a wave packet encircling the intersection studied. It is found that this phase manifests itself in the density profile of the condensate, making it a directly measurable quantity via time-of-flight detection. Moreover, the non-Abelian gauge structure of the system is addressed and we verify how it affects the dynamics.

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