Abstract
The novel idea is that the undergoing accelerated expansion of the universe happens due to infrared quantum gravity modifications at intermediate astrophysical scales of galaxies or galaxy clusters, within the framework of Asymptotically Safe gravity. The reason is that structures of matter are associated with a scale-dependent positive cosmological constant of quantum origin. In this context, no extra unproven energy scales or fine-tuning are used. Furthermore, this model was confronted with the most recent observational data from a variety of probes, and with the aid of Bayesian analysis, the most probable values of the free parameters were extracted. Finally, the model proved to be statistically equivalent with NCDM, and thus being able to resolve naturally the concept of dark energy and its associated cosmic coincidence problem.
| Original language | English |
|---|---|
| Journal | International Journal of Modern Physics D |
| DOIs | |
| Publication status | Accepted/In press - Jan 1 2019 |
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Keywords
- asymptotic safety
- coincidence problem
- Dark energy
- galaxies
- galaxy clusters
- infrared fixed point
ASJC Scopus subject areas
- Mathematical Physics
- Astronomy and Astrophysics
- Space and Planetary Science
Cite this
IR quantum gravity solves naturally cosmic acceleration and its coincidence problem. / Anagnostopoulos, Fotios K.; Kofinas, Georgios; Zarikas, Vasilios.
In: International Journal of Modern Physics D, 01.01.2019.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - IR quantum gravity solves naturally cosmic acceleration and its coincidence problem
AU - Anagnostopoulos, Fotios K.
AU - Kofinas, Georgios
AU - Zarikas, Vasilios
PY - 2019/1/1
Y1 - 2019/1/1
N2 - The novel idea is that the undergoing accelerated expansion of the universe happens due to infrared quantum gravity modifications at intermediate astrophysical scales of galaxies or galaxy clusters, within the framework of Asymptotically Safe gravity. The reason is that structures of matter are associated with a scale-dependent positive cosmological constant of quantum origin. In this context, no extra unproven energy scales or fine-tuning are used. Furthermore, this model was confronted with the most recent observational data from a variety of probes, and with the aid of Bayesian analysis, the most probable values of the free parameters were extracted. Finally, the model proved to be statistically equivalent with NCDM, and thus being able to resolve naturally the concept of dark energy and its associated cosmic coincidence problem.
AB - The novel idea is that the undergoing accelerated expansion of the universe happens due to infrared quantum gravity modifications at intermediate astrophysical scales of galaxies or galaxy clusters, within the framework of Asymptotically Safe gravity. The reason is that structures of matter are associated with a scale-dependent positive cosmological constant of quantum origin. In this context, no extra unproven energy scales or fine-tuning are used. Furthermore, this model was confronted with the most recent observational data from a variety of probes, and with the aid of Bayesian analysis, the most probable values of the free parameters were extracted. Finally, the model proved to be statistically equivalent with NCDM, and thus being able to resolve naturally the concept of dark energy and its associated cosmic coincidence problem.
KW - asymptotic safety
KW - coincidence problem
KW - Dark energy
KW - galaxies
KW - galaxy clusters
KW - infrared fixed point
UR - http://www.scopus.com/inward/record.url?scp=85072560925&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85072560925&partnerID=8YFLogxK
U2 - 10.1142/S0218271819440139
DO - 10.1142/S0218271819440139
M3 - Article
AN - SCOPUS:85072560925
JO - International Journal of Modern Physics D
JF - International Journal of Modern Physics D
SN - 0218-2718
ER -