Natural inflation and quantum gravity
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Cosmic inflation provides an attractive framework for understanding the early Universe and the cosmic microwave background. It can readily involve energies close to the scale at which quantum gravity effects become important. General considerations of black hole quantum mechanics suggest nontrivial constraints on any effective field theory model of inflation that emerges as a low-energy limit of quantum gravity, in particular, the constraint of the weak gravity conjecture. We show that higher-dimensional gauge and gravitational dynamics can elegantly satisfy these constraints and lead to a viable, theoretically controlled and predictive class of natural inflation models.
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The smoothness of the inflationary potential may be preserved if the coefficients of dangerous corrections vanish or are highly suppressed, i.e., if V ≪ Λ_inf^4.
“The smoothness of the inflationary potential may be preserved if the coefficients of dangerous corrections vanish or are highly suppressed, i.e., if V ≪ 4 inf (see de la Fuente et al., 2015 for a model potentially realizing this possibility).”
From Euclidean Wormholes, Baby Universes, and Their Impact on Particle Physics and Cosmology (2018) · cites this paper as de la Fuente et al., 2015
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- Authors
- de la Fuente, A., Saraswat, P., & Sundrum, R.
- Affiliations
- Johns Hopkins University (US)
- University of Maryland, College Park (US)
- Corresponding author
- Saraswat, Prashant
- ORCID
- Sundrum, Raman
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2015-04-14
- Volume
- 114
- Issue
- 15
- Pages
- 151303-151303
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2139359591
- Cited by
- 156
- References
- 58
- Citations by year
- 2026: 5 · 2025: 5 · 2024: 1 · 2023: 6 · 2022: 10 · 2021: 6 · 2020: 14 · 2019: 26 · 2018: 18 · 2017: 28 · 2016: 24 · 2015: 13
- FWCI
- 15.74
- Type
- journal article
- Language
- en
- Open access
- green
- arxiv.org
- Licence
- Locations
- Physical Review Letters (publishedVersion)
- PubMed (publishedVersion)
- arXiv (Cornell University) (submittedVersion)
- arXiv (Cornell University)
- Funders
- National Science Foundation (PHY-1315155, PHY-1214000)
- Topics
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Cosmology and Gravitation Theories
- Physical Sciences › Physics and Astronomy › Statistical and Nonlinear Physics › Noncommutative and Quantum Gravity Theories
- Physical Sciences › Physics and Astronomy › Nuclear and High Energy Physics › Black Holes and Theoretical Physics
- Keywords
- natural inflation, cosmic inflation, quantum gravity, weak gravity conjecture, black hole quantum mechanics, higher-dimensional gauge theory, higher-dimensional gravity, early universe, effective field theory
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