QED coupled to QEG

We discuss the non-perturbative renormalization group flow of Quantum Electrodynamics (QED) coupled to Quantum Einstein Gravity (QEG) and explore the possibilities for defining its continuum limit at a fixed point that would lead to a non-trivial, i.e. interacting field theory. We find two fixed poi...

Full description

Saved in:
Bibliographic Details
Published in:The journal of high energy physics 2011-05, Vol.2011 (5), Article 119
Main Authors: Harst, U., Reuter, M.
Format: Article
Language:English
Subjects:
Classical and Quantum Gravitation
Elementary Particles
Field theory
Fixed points (mathematics)
High energy physics
Physics
Physics and Astronomy
Quantum electrodynamics
Quantum Field Theories
Quantum Field Theory
Quantum Physics
Relativity Theory
String Theory
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We discuss the non-perturbative renormalization group flow of Quantum Electrodynamics (QED) coupled to Quantum Einstein Gravity (QEG) and explore the possibilities for defining its continuum limit at a fixed point that would lead to a non-trivial, i.e. interacting field theory. We find two fixed points suitable for the Asymptotic Safety construction. In the first case, the fine-structure constant α vanishes at the fixed point and its infrared (“renormalized”) value is a free parameter not determined by the theory itself. In the second case, the fixed point value of α is non-zero, and its infrared value is a computable prediction of the theory.
ISSN:1029-8479
1029-8479
DOI:10.1007/JHEP05(2011)119