First-order quantum correction to the Larmor radiation from a moving charge in a spatially homogeneous time-dependent electric field

摘要

First-order quantum correction to the Larmor radiation is investigated on thebasis of the scalar QED on a homogeneous background of time-dependent electricfield, which is a generalization of a recent work by Higuchi and Walker so asto be extended for an accelerated charged particle in a relativistic motion. Weobtain a simple approximate formula for the quantum correction in the limit ofthe relativistic motion when the direction of the particle motion is parallelto that of the electric field.