The radiation equation of state and loop quantum gravity corrections

TL;DR

This paper derives the radiation equation of state within a canonical framework, incorporating quantum gravity corrections to explore their impact on early universe evolution during radiation-dominated periods.

Contribution

It introduces quantum gravity correction terms into the radiation equation of state using a canonical electromagnetic field formulation, linking quantum geometry effects to cosmological evolution.

Findings

Quantum geometry corrections modify the classical radiation equation of state.

Corrections relate to the conformal invariance of classical equations.

Implications for universe evolution during radiation epochs.

Abstract

The equation of state for radiation is derived in a canonical formulation of the electromagnetic field. This allows one to include correction terms expected from canonical quantum gravity and to infer implications to the universe evolution in radiation dominated epochs. Corrections implied by quantum geometry can be interpreted in physically appealing ways, relating to the conformal invariance of the classical equations.