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Superconformal inflationary α-attractors
Open accessAbstract
A bstractRecently a broad class of superconformal inflationary models was found leading to a universal observational prediction $ {n_s}=1-\frac{2}{N} $ and $ r=\frac{12 }{{{N^2}}} $ [1, 2]. Here we generalize this class of models by introducing a parameter α inversely proportional to the curvature of the inflaton Kähler manifold. In the small curvature (large α) limit, the observational predictions of this class of models coincide with the predictions of generic chaotic inflation models. However, for sufficiently large curvature (small α), the predictions converge to the universal attractor regime with $ {n_s}=1-\frac{2}{N} $ and $ r=\alpha \frac{12 }{{{N^2}}} $, which corresponds to the part of the ns − r plane favored by the Planck data.
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Cites
A new type of isotropic cosmological models without singularity
Starobinsky, A. A. (1980) · Physics Letters B · doi:10.1016/0370-2693(80)90670-x · Cited by 7,677
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In the realm of the Hubble tension—a review of solutions *
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The Swampland: Introduction and Review
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Metadata
- Authors
- Kallosh, R., Linde, A., & Roest, D.
- Venue
- Journal of High Energy Physics
- Published
- 2013-11
- Volume
- 2013
- Issue
- 11
- ISSN
- 1029-8479 (ISSN-L)
- OpenAlex
- W1574779069
- Cited by
- 701
- References
- 1
- FWCI
- 17.32
- Type
- journal article
- Language
- en
- Open access
- green
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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