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arXiv · 0812.1725

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

Jonas Larson·Erik Sjoqvist
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Abstract

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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Jonas Larson, Erik Sjoqvist. 2008-12-09. Jahn-Teller induced Berry phase in spin-orbit coupled Bose-Einstein condensates. https://doi.org/10.1103/physreva.79.043627

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