Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/20.500.12386/28391
Titolo: | Cosmological bounds on the field content of asymptotically safe gravity-matter models | Autori: | BONANNO, Alfio Maurizio Platania, Alessia Saueressig, Frank |
Data pubblicazione: | 2018 | Rivista: | PHYSICS LETTERS. SECTION B | Numero: | 784 | Da pagina:: | 229 | Abstract: | We use the non-Gaussian fixed points (NGFPs) appearing in the renormalization group flow of gravity and gravity-matter systems to construct models of NGFP-driven inflation via a renormalization group improvement scheme. The cosmological predictions of these models depend sensitively on the characteristic properties of the NGFPs, including their position and stability coefficients, which in turn are determined by the field content of the underlying matter sector. We demonstrate that the NGFPs appearing in gravity-matter systems where the matter content is close to the one of the standard model of particle physics are the ones compatible with cosmological data. Somewhat counterintuitively, the negative fixed point value of the dimensionless cosmological constant is essential for these findings. | URI: | http://hdl.handle.net/20.500.12386/28391 | URL: | https://www.sciencedirect.com/science/article/pii/S0370269318305033?via%3Dihub | ISSN: | 0370-2693 | DOI: | 10.1016/j.physletb.2018.06.047 | Bibcode ADS: | 2018PhLB..784..229B | Fulltext: | open |
È visualizzato nelle collezioni: | 1.01 Articoli in rivista |
File in questo documento:
File | Descrizione | Dimensioni | Formato | |
---|---|---|---|---|
OA5.pdf | Pdf editoriale | 441.49 kB | Adobe PDF | Visualizza/apri |
Page view(s)
28
controllato il 23-apr-2024
Download(s)
10
controllato il 23-apr-2024
Google ScholarTM
Check
Altmetric
Altmetric
Tutti i documenti in DSpace sono pubblicati ad Accesso Aperto, salvo diversa indicazione per alcuni documenti specifici.