Analytic infinite derivative gravity, R 2-like inflation, quantum gravity and CMB
| Autor: | Alexei A. Starobinsky, Alexey S. Koshelev, K. Sravan Kumar |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
High Energy Physics - Theory
Inflation (cosmology) Physics inflationary cosmology Cosmology and Nongalactic Astrophysics (astro-ph.CO) 010308 nuclear & particles physics Cosmic microwave background Quantum gravity FOS: Physical sciences Astronomy and Astrophysics General Relativity and Quantum Cosmology (gr-qc) 01 natural sciences General Relativity and Quantum Cosmology Theoretical physics Quantization (physics) High Energy Physics - Theory (hep-th) Space and Planetary Science 0103 physical sciences 010306 general physics Mathematical Physics Astrophysics - Cosmology and Nongalactic Astrophysics |
| Zdroj: | International Journal of Modern Physics D. 29(14) |
| ISSN: | 0218-2718 |
| Popis: | Emergence of $R^2$ inflation which is the best fit framework for CMB observations till date comes from the attempts to attack the problem of quantization of gravity which in turn have resulted in the trace anomaly discovery. Further developments in trace anomaly and different frameworks aiming to construct quantum gravity indicate an inevitability of non-locality in fundamental physics at small time and length scales. A natural question would be to employ the $R^2$ inflation as a probe for signatures of non-locality in the early Universe physics. Recent advances of embedding $R^2$ inflation in a string theory inspired non-local gravity modification provides very promising theoretical predictions connecting the non-local physics in the early Universe and the forthcoming CMB observations. Comment: 6 pages, 3 figures, Received an Honorable mention at the Gravity Research Foundation 2020 Awards for Essays on Gravitation. This version matches with the one published in IJMPD |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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