Decay widths and scattering processes in massive QED$_2$

TL;DR

This paper uses mass perturbation theory to analyze the bound-state spectrum, decay widths, and scattering processes in massive QED$_2$, accounting for resonances and particle production thresholds.

Contribution

It introduces a method to compute decay widths and analyze scattering processes in massive QED$_2$ using mass perturbation theory, including resonances and thresholds.

Findings

Bound-state spectrum characterized

Decay widths of unstable states computed

Scattering processes including resonances analyzed

Abstract

Using mass perturbation theory, we infer the bound-state spectrum of massive QED$_2$ and compute some decay widths of unstable bound states. Further, we discuss scattering processes, where all the resonances and particle production thresholds are properly taken into account by our methods.