Pole inflation from non-minimal coupling to gravity
| Autor: | Karamitsos, Sotirios, Strumia, Alessandro |
|---|---|
| Rok vydání: | 2022 |
| Předmět: |
High Energy Physics - Theory
High Energy Physics - Phenomenology General Relativity and Quantum Cosmology Nuclear and High Energy Physics Cosmology and Nongalactic Astrophysics (astro-ph.CO) High Energy Physics - Phenomenology (hep-ph) High Energy Physics - Theory (hep-th) FOS: Physical sciences General Relativity and Quantum Cosmology (gr-qc) Astrophysics - Cosmology and Nongalactic Astrophysics |
| Zdroj: | Journal of High Energy Physics |
| ISSN: | 1029-8479 |
| Popis: | Transforming canonical scalars to the Einstein frame can give a multi-field generalization of pole inflation (namely, a scalar with a divergent kinetic term) at vanishing field-dependent Planck mass. However, to obtain an attractor, the scalar potential must obey certain non-generic conditions. These are automatically satisfied in Quantum Field Theories with dimension-less couplings. The resulting models of pole inflation have special inflationary predictions determined by the full RG running of couplings. Acceptable predictions for the tensor/scalar ratio arise for perturbative but moderately large couplings, so we explore the possible QFT runnings: to confinement, to an IR fixed point, and to a UV fixed point. Comment: 22 pages, 5 figures; journal version |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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