Emergence of chaotic scattering in ultracold Er and Dy

Published

November 19, 2015

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

Pub Type

Journals

Download Paper

https://doi.org/10.1103/PhysRevX.5.041029

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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 October 13, 2025)