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Updated: Jun 19, 2026

Spatial Separation of Molecular Conformers and Clusters

Spatial Separation of Molecular Conformers and Clusters

Published on: January 9, 2014

Conical intersections in laboratory coordinates with ultracold molecules.

Alisdair O G Wallis¹, S A Gardiner, Jeremy M Hutson

¹Department of Chemistry, Durham University, South Road, Durham, DH1 3LE, United Kingdom.

Physical Review Letters

|October 2, 2009

Summary

This summary is machine-generated.

Electric and magnetic fields induce geometric phase effects in ultracold polar molecules. This leads to stable superfluid flow states with half-integer quantized angular momentum in Bose-Einstein condensates.

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Area of Science:

Quantum physics
Atomic and molecular physics
Condensed matter physics

Background:

Two states of opposite parity can cross under an external magnetic field.
Electric fields break symmetry, inducing avoided crossings and conical intersections.
Geometric phase effects are crucial in quantum systems.

Purpose of the Study:

Investigate the impact of geometric phase on ultracold polar molecules.
Explore the creation of conical intersections using electric and magnetic fields.
Analyze the resulting superfluid flow in Bose-Einstein condensates.

Main Methods:

Applying combined electric and magnetic fields to polar molecules.
Utilizing the mean-field approximation for Bose-Einstein condensates.
Analyzing the geometric phase effects on quantum states.

Main Results:

An electric field induces an avoided crossing between states of opposite parity.
A conical intersection can be formed as a function of spatial coordinates.
Geometric phase effects lead to stable states of persistent superfluid flow.

Conclusions:

Ultracold polar molecules exhibit unique behavior under combined fields.
The geometric phase is key to achieving persistent superfluid flow.
Bose-Einstein condensates can support half-integer quantized angular momentum states.