O(m alpha^7 ln(alpha)^2) corrections to positronium energy levels

TL;DR

This paper calculates high-order quantum electrodynamics corrections to positronium energy levels, refining theoretical predictions and estimating current uncertainties in the spectrum.

Contribution

It provides the first detailed calculation of O(m alpha^7 ln(alpha)^2) corrections to positronium energy levels, advancing precision in QED predictions.

Findings

Refined theoretical estimates of positronium energy levels.

Quantified current uncertainties in positronium spectrum predictions.

Abstract

We present a calculation of the O(m alpha^7 ln(alpha)^2) corrections to positronium energy levels. The result is used to estimate the current uncertainty in theoretical predictions of the positronium spectrum.