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Long-range states in collisions of ultracold molecules [dataset] Open Access

We use coupled-channel calculations to explore the nature of near-threshold bound states in a simplified model of Rb+KRb. This is a prototype for systems with very strong coupling at short range and chaotic behavior for the short-range states. We find that there are states with strong long-range character that exist close to threshold and probably persist to depths at least 100 GHz below each threshold. These states are only weakly coupled to the short-range states and do not form part of the chaotic manifold. Since they spend little time at short range, they are relatively insensitive to destruction by laser light. They can thus have long lifetimes that are unrelated to the density of states and can cause narrow Feshbach resonances when the states are shifted across thresholds by external fields.

Descriptions

Resource type

Dataset

Contributors

Creator: Hutson, Jeremy M ¹
Data collector: Croft, James F E ¹

¹ Durham University

Funder

Engineering and Physical Sciences Research Council

Research methods

Other description

Keyword

Ultracold molecules

Subject

Molecular physics
Molecular spectroscopy
Molecular collisions

Location

Language

Cited in

Identifier

ark:/32150/r1m326m1814
doi:10.15128/r1m326m1814

Rights

Creative Commons Attribution 4.0 International (CC BY)

Publisher

Durham University

Date Created

File Details

Depositor

J.M. Hutson

Date Uploaded

29 April 2026, 19:04:58

Date Modified

30 April 2026, 10:04:33

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Characterization

File format: x-gzip (GZIP Format, GZIP)

Mime type: application/x-gzip

File size: 22704081

Last modified: 2026:04:29 20:28:19+01:00

Filename: rbkrb_data.tar.gz

Original checksum: e3366b1003516df5fa9e5080b1ab3006