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.
Emergence of chaotic scattering in ultracold Er and Dy
Published
Author(s)
T. Maier, H Kadau, M. Schmitt, M. Wenzel, I. Ferrier-Barbut, T. Pfau, A. Frisch, S. Baier, K. Aikawa, L. Chomaz, Mark M.J., F. Ferlaino, Constantinos Makrides, A Petrov, Svetlana A. Kotochigova, Eite Tiesinga
Abstract
We show that for complex and magnetic atoms chaotic scattering behavior emerges due to anisotropic inter- action potentials and finite Zeeman coupling. This generic behavior is studied in a collaborative effort for both ultracold dysprosium and erbium experimentally as well as theoretically via the statistical analysis of dense Feshbach resonance spectra. At zero magnetic field our theoretical analysis shows that short-ranged anisotropic interactions are sufficiently strong that weakly-bound diatomic levels contain an overlapping uncoupled chaotic series that combine to form a random distribution. Moreover, the Zeeman interaction shifts and couples these levels, which leads to a resonant-scattering spectrum that changes from random to chaotically distributed for increasing magnetic field.
Maier, T.
, Kadau, H.
, Schmitt, M.
, Wenzel, M.
, Ferrier-Barbut, I.
, Pfau, T.
, Frisch, A.
, Baier, S.
, Aikawa, K.
, Chomaz, L.
, M.J., M.
, Ferlaino, F.
, Makrides, C.
, Petrov, A.
, Kotochigova, S.
and Tiesinga, E.
(2015),
Emergence of chaotic scattering in ultracold Er and Dy, Physical Review X, [online], https://doi.org/10.1103/PhysRevX.5.041029, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=918697
(Accessed October 11, 2025)