Conical intersections in laboratory coordinates with ultracold molecules

Wallis, A.O.G.; Gardiner, S.A.; Hutson, J.M.

Abstract

For two states of opposite parity that cross as a function of an external magnetic field, the addition of an electric field will break the symmetry and induce an avoided crossing. A suitable arrangement of fields may be used to create a conical intersection as a function of external spatial coordinates. We consider the effect of the resulting geometric phase for ultracold polar molecules. For a Bose-Einstein condensate in the mean-field approximation, the geometric phase effect induces stable states of persistent superfluid flow that are characterized by half-integer quantized angular momentum.

Citation

Wallis, A., Gardiner, S., & Hutson, J. (2009). Conical intersections in laboratory coordinates with ultracold molecules. Physical Review Letters, 103(8), Article 083201. https://doi.org/10.1103/physrevlett.103.083201

• Journal Article Type: Article
• Publication Date: Aug 1, 2009
• Deposit Date: Oct 9, 2009
• Publicly Available Date: Jul 1, 2010
• Journal: Physical Review Letters
• Print ISSN: 0031-9007
• Electronic ISSN: 1079-7114
• Publisher: American Physical Society
• Peer Reviewed: Peer Reviewed
• Volume: 103
• Issue: 8
• Article Number: 083201
• DOI: https://doi.org/10.1103/physrevlett.103.083201
• Publisher URL: http://link.aps.org/doi/10.1103/PhysRevLett.103.083201