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Professor Tonnis ter Veldhuis, Department of Physics & Astronomy, Macalester College is presenting on "Double copy: a new look at scattering amplitudes."

The calculation of scattering amplitudes is essential to the field of high energy physics, since amplitudes provide the bridge between theoretical quantum field theory models and detector results from particle accelerator experiments.  Recent advances in this area have uncovered novel color-kinematics and double-copy structures in theories ranging from gauge and gravity theories to effective field theories. I will provide an introduction to these new developments and relate my own contribution in this area made during my sabbatical leave at the University of Groningen, namely a systematic classification of scalar field theories whose amplitudes admit a double copy formulation.

Refreshments at 3 p.m.