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

Entropy Production during Asymptotically Safe Inflation

by 1,2,* and 3
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.
Entropy 2011, 13(1), 274-292; https://doi.org/10.3390/e13010274
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)
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. View Full-Text
Keywords: quantum gravity; Asymptotic Safety; inflation quantum gravity; Asymptotic Safety; inflation
Show Figures

Graphical abstract

MDPI and ACS Style

Bonanno, A.; Reuter, M. Entropy Production during Asymptotically Safe Inflation. Entropy 2011, 13, 274-292. https://doi.org/10.3390/e13010274

AMA Style

Bonanno A, Reuter M. Entropy Production during Asymptotically Safe Inflation. Entropy. 2011; 13(1):274-292. https://doi.org/10.3390/e13010274

Chicago/Turabian Style

Bonanno, Alfio, and Martin Reuter. 2011. "Entropy Production during Asymptotically Safe Inflation" Entropy 13, no. 1: 274-292. https://doi.org/10.3390/e13010274

Find Other Styles

Article Access Map by Country/Region

1
Only visits after 24 November 2015 are recorded.
Back to TopTop