Inflationary Butterfly Effect: Non-perturbative Dynamics From Small-Scale Features
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arXiv
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| Main Authors: | , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866929536745078784 |
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| author | Caravano, Angelo Inomata, Keisuke Renaux-Petel, Sébastien |
| author_facet | Caravano, Angelo Inomata, Keisuke Renaux-Petel, Sébastien |
| contents | For the first time, we investigate the non-perturbative dynamics of single field inflation with a departure from slow-roll. Using simulations, we find that oscillatory features in the potential can drastically alter the course of inflation, with major phenomenological implications. In certain cases, the entire Universe gets trapped in a forever inflating de Sitter state. In others, only some regions get stuck in a false vacuum, offering an alternative channel for primordial black hole formation. Analogous to the flap of a butterfly, these results show that small-scale phenomena can have profound consequences on the evolution of the entire Universe. This demonstrates the necessity of a non-perturbative approach in the exploration of the small-scale physics of inflation, particularly in the regime relevant for gravitational-wave astronomy. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2403_12811 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Inflationary Butterfly Effect: Non-perturbative Dynamics From Small-Scale Features Caravano, Angelo Inomata, Keisuke Renaux-Petel, Sébastien Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology High Energy Physics - Theory For the first time, we investigate the non-perturbative dynamics of single field inflation with a departure from slow-roll. Using simulations, we find that oscillatory features in the potential can drastically alter the course of inflation, with major phenomenological implications. In certain cases, the entire Universe gets trapped in a forever inflating de Sitter state. In others, only some regions get stuck in a false vacuum, offering an alternative channel for primordial black hole formation. Analogous to the flap of a butterfly, these results show that small-scale phenomena can have profound consequences on the evolution of the entire Universe. This demonstrates the necessity of a non-perturbative approach in the exploration of the small-scale physics of inflation, particularly in the regime relevant for gravitational-wave astronomy. |
| title | Inflationary Butterfly Effect: Non-perturbative Dynamics From Small-Scale Features |
| topic | Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology High Energy Physics - Theory |
| url | https://arxiv.org/abs/2403.12811 |