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Related Experiment Video

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Spatial Separation of Molecular Conformers and Clusters

Spatial Separation of Molecular Conformers and Clusters

Published on: January 9, 2014

Efimov Effect in Ultracold Microwave-Shielded Polar Molecules.

Shayamal Singh¹, Chris H Greene^1,2

¹Purdue University, Department of Physics and Astronomy, West Lafayette, Indiana 47907, USA.

Physical Review Letters

|June 26, 2026

Summary

Shielding dipolar molecules reveals universal two- and three-body physics, predicting observable Efimov physics. This quantum-mechanical approach enables the creation and detection of molecular trimers.

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Area of Science:

Quantum mechanics
Molecular physics
Atomic physics

Background:

Dipolar molecules exhibit complex anisotropic and long-range interactions.
Understanding three-body physics is crucial for molecular systems.
Efimov physics, a universal phenomenon in three-body systems, is typically observed in ultracold atomic gases.

Purpose of the Study:

To present a quantum-mechanical description for the three-body physics of shielded dipolar molecules.
To predict observable Efimov physics in this system.
To explore the emergence of universality in two- and three-body interactions.

Main Methods:

Quantum-mechanical calculations.
Analysis of scattering length resonances.
Application of the sudden approximation.

Main Results:

Shielding enables a universal regime at the two-body level, extending to the three-body sector.
Computed trimer binding energies show characteristic Efimov state scaling.
The three-body parameter in dipolar units is found to be universal.
The sudden approximation can create trimer bound states from positive energy trap states.

Conclusions:

Efimov physics is predicted to be observable in shielded dipolar molecules.
Universality emerges in both two- and three-body physics due to shielding.
The sudden approximation offers a method for creating or detecting molecular trimers.