A simple supergravity model of inflation constrained with Planck 2018 data
| Autor: | J. Alberto Vázquez, Ariadna Montiel, Gabriel German, Francisco X. Linares Cedeño, Juan Carlos Hidalgo |
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| Rok vydání: | 2019 |
| Předmět: |
High Energy Physics - Theory
Inflation (cosmology) Physics Cosmology and Nongalactic Astrophysics (astro-ph.CO) Field (physics) 010308 nuclear & particles physics Supergravity Cosmic microwave background Scalar (mathematics) FOS: Physical sciences Observable General Relativity and Quantum Cosmology (gr-qc) Invariant (physics) 01 natural sciences General Relativity and Quantum Cosmology Theoretical physics symbols.namesake High Energy Physics - Theory (hep-th) 0103 physical sciences symbols Planck 010306 general physics Astrophysics - Cosmology and Nongalactic Astrophysics |
| DOI: | 10.48550/arxiv.1909.02019 |
| Popis: | We study a model of inflation based on $\mathcal{N}=1$ supergravity essentially depending on one effective parameter. Under a field transformation we show that this model turns out to be equivalent to a previously studied supergravity model known to be ruled out with the original choice of the parameter. Such parameter measures the slope of the potential at observable scales. Through a Bayesian parameter estimation, it is shown how this model is compatible with recent CMB temperature measurements by {\it Planck 2018} giving rise to a simple, viable, single field model of inflation. The tensor to scalar ratio constraint is found to be $r_{0.002} 8 pages, 2 tables, 5 figures. Final version accepted for publication in PRD |
| Databáze: | OpenAIRE |
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