Jahn-Teller-induced Berry phase in spin-orbit-coupled Bose-Einstein condensates
2009 (English)In: Physical Review A. Atomic, Molecular, and Optical Physics, ISSN 1050-2947, E-ISSN 1094-1622, Vol. 79, 043627- p.Article in journal (Refereed) Published
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 is 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.
Place, publisher, year, edition, pages
2009. Vol. 79, 043627- p.
Berry phase, Bose-Einstein condensation, Jahn-Teller effect, spin-orbit interactions
Physical Sciences Atom and Molecular Physics and Optics
Research subject Physics; Physics with specialization in Quantum Chemistry; Physics with spec. in Atomic, Molecular and Condensed Matter Physics
IdentifiersURN: urn:nbn:se:uu:diva-102426DOI: 10.1103/PhysRevA.79.043627ISI: 000265947500049OAI: oai:DiVA.org:uu-102426DiVA: diva2:216134