Skip to main content
U.S. flag

An official website of the United States government

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.
Citation
Physical Review X
Volume
5

Keywords

ultra-cold atoms, collisional resonances, chaos theory, random-matrix theory Keywords: ultra-cold atoms, collisional resonances, chaos theory, random-matrix theory

Citation

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 November 30, 2021)
Created November 18, 2015, Updated October 12, 2021