Next Article in Journal
A Maximum Entropy Modelling of the Rain Drop Size Distribution
Next Article in Special Issue
Microcanonical Description of (Micro) Black Holes
Previous Article in Journal
Information Theory in Scientific Visualization
Previous Article in Special Issue
Corrections to Bekenstein-Hawking Entropy— Quantum or not-so Quantum?
Article Menu

Export Article

Open AccessArticle
Entropy 2011, 13(1), 274-292; doi:10.3390/e13010274

Entropy Production during Asymptotically Safe Inflation

1
INAF-Catania Astrophysical Observatory,Via S.Sofia 78, 95123 Catania, Italy
2
INFN, Via S.Sofia 64, 95123 Catania, Italy
3
Institute of Physics, University of Mainz, Staudingerweg 7, D-55099 Mainz, Germany
*
Author to whom correspondence should be addressed.
Received: 10 December 2010 / Revised: 5 January 2011 / Accepted: 5 January 2011 / Published: 24 January 2011
(This article belongs to the Special Issue Entropy in Quantum Gravity)
View Full-Text   |   Download PDF [183 KB, uploaded 24 February 2015]   |  

Abstract

The Asymptotic Safety scenario predicts that the deep ultraviolet of Quantum Einstein Gravity is governed by a nontrivial renormalization group fixed point. Analyzing its implications for cosmology using renormalization group improved Einstein equations, we find that it can give rise to a phase of inflationary expansion in the early Universe. Inflation is a pure quantum effect here and requires no inflaton field. It is driven by the cosmological constant and ends automatically when the renormalization group evolution has reduced the vacuum energy to the level of the matter energy density. The quantum gravity effects also provide a natural mechanism for the generation of entropy. It could easily account for the entire entropy of the present Universe in the massless sector.
Keywords: quantum gravity; Asymptotic Safety; inflation quantum gravity; Asymptotic Safety; inflation
Figures

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Bonanno, A.; Reuter, M. Entropy Production during Asymptotically Safe Inflation. Entropy 2011, 13, 274-292.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Entropy EISSN 1099-4300 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top