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Time delays in ultracold atomic and molecular collisions (2019)
Journal Article
Frye, M. D., & Hutson, J. M. (2019). Time delays in ultracold atomic and molecular collisions. Physical Review Research, 1(3), Article 033023. https://doi.org/10.1103/physrevresearch.1.033023

We study the behavior of the Eisenbud-Wigner collisional time delay around Feshbach resonances in cold and ultracold atomic and molecular collisions. We carry out coupled-channel scattering calculations on ultracold Rb and Cs collisions. In the low-e... Read More about Time delays in ultracold atomic and molecular collisions.

Ultracold collisions of Cs atoms in excited Zeeman and hyperfine states (2019)
Journal Article
Frye, M. D., Yang, B., & Hutson, J. M. (2019). Ultracold collisions of Cs atoms in excited Zeeman and hyperfine states. Physical Review A, 100(2), Article 022702. https://doi.org/10.1103/physreva.100.022702

We investigate Cs + Cs scattering in excited Zeeman and hyperfine states. We calculate the real and imaginary parts of the s-wave scattering length; the imaginary part directly provides the rate coefficient for two-body inelastic loss, while the real... Read More about Ultracold collisions of Cs atoms in excited Zeeman and hyperfine states.

Sticky collisions of ultracold RbCs molecules (2019)
Journal Article
Gregory, P. D., Frye, M. D., Blackmore, J. A., Bridge, E. M., Sawant, R., Hutson, J. M., & Cornish, S. L. (2019). Sticky collisions of ultracold RbCs molecules. Nature Communications, 10(1), Article 3104. https://doi.org/10.1038/s41467-019-11033-y

Understanding and controlling collisions is crucial to the burgeoning field of ultracold molecules. All experiments so far have observed fast loss of molecules from the trap. However, the dominant mechanism for collisional loss is not well understood... Read More about Sticky collisions of ultracold RbCs molecules.