NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.
Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.
An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Multichannel Quantum-Defect Theory for Slow Atomic Collisions
Published
Author(s)
B Gao, Eite Tiesinga, Carl J. Williams, Paul S. Julienne
Abstract
We present a multichannel quantum-defect theory for slow atomic collisions that takes advantages of the analytic solutions for the long-range potential, and both the energy and the angular-momentum insensitivities of the short-range parameters. The theory provides an accurate and complete account of scattering processes, including shape and Feshbach resonances, in terms of a few parameters such as the singlet and the triplet scattering lengths. As an example, results for ^23}Na-^23}Na scattering are presented and compared close-coupling calculations.
Citation
Physical Review A (Atomic, Molecular and Optical Physics)
Gao, B.
, Tiesinga, E.
, Williams, C.
and Julienne, P.
(2005),
Multichannel Quantum-Defect Theory for Slow Atomic Collisions, Physical Review A (Atomic, Molecular and Optical Physics)
(Accessed October 11, 2025)