Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/28387
Title: | Asymptotically safe cosmology - A status report | Authors: | BONANNO, Alfio Maurizio Saueressig, Frank |
Issue Date: | 2017 | Journal: | COMPTES RENDUS PHYSIQUE | Number: | 18 | Issue: | 3-4 | First Page: | 254 | Abstract: | Asymptotic safety, based on a non-Gaussian fixed point of the gravitational renormalization group flow, provides an elegant mechanism for completing the gravitational force at sub-Planckian scales. At high energies, the fixed point controls the scaling of couplings such that unphysical divergences are absent, while the emergence of classical low-energy physics is linked to a crossover between two renormalization group fixed points. These features make asymptotic safety an attractive framework for the building of a cosmological model. The resulting scenarios may naturally give rise to a quantum-gravity-driven inflationary phase in the very early universe and an almost scale-free fluctuation spectrum. Moreover, effective descriptions arising from an improvement of the renormalization group permit a direct comparison to cosmological observations as, e.g., Planck data. | URI: | http://hdl.handle.net/20.500.12386/28387 | URL: | https://www.sciencedirect.com/science/article/pii/S1631070517300270 | ISSN: | 1631-0705 | DOI: | 10.1016/j.crhy.2017.02.002 | Bibcode ADS: | 2017CRPhy..18..254B | Fulltext: | open |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
CRP preprint1702.04137.pdf | preprint | 775.11 kB | Adobe PDF | View/Open |
OA1.pdf | [Administrators only] | 457.55 kB | Adobe PDF |
Page view(s)
46
checked on Aug 3, 2024
Download(s)
17
checked on Aug 3, 2024
Google ScholarTM
Check
Altmetric
Altmetric
Items in DSpace are published in Open Access, unless otherwise indicated.