The nature of the continuum limit in strongly coupled quenched QED

TL;DR

This paper reviews large-scale simulations of quenched QED, analyzing its phase diagram, critical behavior, and continuum limit, with results aligning with theoretical predictions and implications for Technicolor models.

Contribution

It provides comprehensive simulation data on quenched QED's phase structure and continuum limit, confirming theoretical anomalous dimensions and scaling relations.

Findings

Anomalous dimensions agree with Schwinger-Dyson solutions.

Spectroscopy results support Goldstone and PCAC constraints.

Indications of Technicolor-like behavior at short distances.

Abstract

We review the results of large scale simulations of noncompact quenched $QED$ which use spectrum and Equation of State calculations to determine the theory's phase diagram, critical indices, and continuum limit. The resulting anomalous dimensions are in good agreement with Schwinger-Dyson solutions of the ladder graphs of conventional $QED$ and they satisfy the hyperscaling relations expected of a relativistic renormalizable field theory. The spectroscopy results satisfy the constraints of the Goldstone mechanism and PCAC, and may be indicative of Technicolor versions of the Standard Model which are strongly coupled at short distances.