Large tensor-to-scalar ratio and running of the scalar spectral index with instep inflation
If a sizeable tensor-to-scalar ratio ∼0.1 turns out to be detected and a negative running of the scalar spectral index ∼10−2 is significantly required by the data, the vast majority of single field models of inflation will be ruled out. We show that a flat tree-level effective potential, lifted by r...
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| Main Authors: | , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
3 February 2015
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| In: |
Physical review. D, Particles, fields, gravitation, and cosmology
Year: 2015, Volume: 91, Issue: 4 |
| ISSN: | 1550-2368 |
| DOI: | 10.1103/PhysRevD.91.043502 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevD.91.043502 Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevD.91.043502 
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| Author Notes: | Guillermo Ballesteros, and J. Alberto Casas |
| Summary: | If a sizeable tensor-to-scalar ratio ∼0.1 turns out to be detected and a negative running of the scalar spectral index ∼10−2 is significantly required by the data, the vast majority of single field models of inflation will be ruled out. We show that a flat tree-level effective potential, lifted by radiative corrections and by the imprints of a high energy scale (in the form of nonrenormalizable operators) can explain those features and produce enough inflation in the slow-roll regime. |
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| Item Description: | Gesehen am 29.07.2020 |
| Physical Description: | Online Resource |
| ISSN: | 1550-2368 |
| DOI: | 10.1103/PhysRevD.91.043502 |