Speaker
Dr
Jung-Wook Kim
(Max Planck Institute for Gravitational Physics)
Description
We study the (ambi-)twistor model for spinning particles interacting via electromagnetic field, as a toy model for studying classical dynamics of gravitating bodies including effects of both spins to all orders. The all-orders-in-spin effects are encoded as a dynamical implementation of the Newman-Janis shift, and we find that the expansion in both spins can be resummed to simple expressions in special kinematic configurations, at least up to one-loop order. We also observe that cutting rules associated with causality prescription for worldline propagators can be viewed as Poisson brackets of subdiagrams.
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Authors
Mr
Joon-Hwi Kim
(Caltech)
Dr
Jung-Wook Kim
(Max Planck Institute for Gravitational Physics)
Dr
Sangmin Lee
(Seoul National University)
