Conical intersections in laboratory coordinates with ultracold molecules

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.

4 pages, 2 figures; paper modified in response to referees comments

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• Ultracold chemistry with alkali-metal-rare-earth molecules
• Microwave state transfer and adiabatic dynamics of magnetically trapped polar molecules
• Magnetic properties and quench dynamics of two interacting ultracold molecules in a trap
• The non-Abelian bosonic quantum ring
• Optically induced conical intersections in traps for ultracold atoms and molecules
• Non-adiabatic dynamics in Rydberg gases with random atom positions
• Floquet Engineering of a Diatomic Molecule Through a Bichromatic Radiation Field
• Roaming pathways and survival probability in real-time collisional dynamics of cold and controlled bialkali molecules
• Spin Phonon Relaxation Dynamics from a Conical Intersection of Trapped Rydberg Ions