AMO Seminar

Prof. Nirav Mehta, Department of Physics and Astronomy, Trinity University

"Universal few-body physics in one dimension"

4:00pm, RLM 11.204

Abstract: We have recently performed a set of calculations regarding the universal states and scattering properties of ultracold few-body systems under one-dimensional confinement — particularly, few-body systems with a single impurity of lighter mass than the heavy background atoms. I will present “phase diagrams” that characterize the few-body properties of the system in terms of two unitless parameters that uniquely specify the universal physics: the heavy-light mass ratio, and the ratio of heavy-heavy and heavy-light scattering lengths. I will show results for the atom-dimer scattering length and atom-trimer scattering length as a function of these two parameters. I will further show how the two-dimensional phase space can be partitioned into various regions according to which set of inelastic few-body processes are energetically allowed.