Electromagnetic and Gravitational Scattering at Planckian Energies

TL;DR

This paper investigates how magnetic charge influences electromagnetic and gravitational scattering at Planckian energies, revealing significant modifications to scattering behavior and amplitude structure.

Contribution

It demonstrates that magnetic charge causes notable changes in scattering cross sections and amplitude holomorphicity at high energies, challenging previous gravitational dominance assumptions.

Findings

Magnetic charge alters scattering cross sections at Planck energies.

Presence of magnetic charge modifies the holomorphic structure of the amplitude.

Magnetic effects become significant despite gravitational dominance expectations.

Abstract

The scattering of pointlike particles at very large center of mass energies and fixed low momentum transfers, occurring due to both their electromagnetic and gravitational interactions is re-examined in the particular case when one of the particles carries magnetic charge. At Planckian center-of-mass energies, when gravitational dominance is normally expected, the presence of magnetic charge is shown to produce dramatic modifications to the scattering cross section as well as to the holomorphic structure of the scattering amplitude.