Help Privacy Policy Disclaimer
  Advanced SearchBrowse





Massive twistor worldline in electromagnetic fields


Kim,  Jung-Wook
Astrophysical and Cosmological Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

External Resource
No external resources are shared
Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Fulltext (public)

(Preprint), 926KB

Supplementary Material (public)
There is no public supplementary material available

Kim, J.-H., Kim, J.-W., & Lee, S. (in preparation). Massive twistor worldline in electromagnetic fields.

Cite as: https://hdl.handle.net/21.11116/0000-000F-5736-3
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. We compute
the momentum kick and spin kick up to one-loop order and show precisely how
they are encoded in the classical eikonal. 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 confirm
that the classical eikonal can be understood as the generator of canonical
transformations that map the in-states of a scattering process to the
out-states. We also show that cut contributions for converting worldline
propagators from time-symmetric to retarded amount to the iterated action of
the leading eikonal at one-loop order.