Observables from the spinning eikonal

Author:

Luna AndresORCID,Moynihan NathanORCID,O’Connell DonalORCID,Ross Alasdair

Abstract

Abstract We study the classical dynamics of spinning particles using scattering amplitudes and eikonal exponentiation. We show that observables are determined by a simple algorithm. A wealth of complexity arises in perturbation theory as positions, momenta and spins must be iteratively corrected at each order. Even though we restrict ourselves to one-loop computations at quadratic order in spin, nevertheless we encounter and resolve a number of subtle effects. Finally, we clarify the links between our work and various other eikonal approaches to spinning observables.

Publisher

Springer Science and Business Media LLC

Reference103 articles.

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