Non-relativistic Bremsstrahlung in QED: Hamiltonian vs. Path Integral Approach

TL;DR

This paper presents a novel derivation of non-relativistic bremsstrahlung radiation intensity in QED using the path integral formalism, offering an alternative to traditional Hamiltonian methods.

Contribution

It introduces a path integral approach to derive bremsstrahlung radiation, providing new insights into photon production during particle collisions.

Findings

Effective action's imaginary part relates to photon production rate

Path integral formalism offers an alternative derivation method

Enhances understanding of non-relativistic bremsstrahlung processes

Abstract

An alternative derivation of the radiation intensity in non-relativistic bremsstrahlung is provided utilizing the path integral formalism. By integrating out the gauge field, one obtains the effective action which it's imaginary part is interpreted as the rate of photon production during the collision.