Antoniadis, Ignatios; Chatrabhuti, Auttakit; Isono, Hiroshi; Sypsas, Spyros (2020). Note on initial conditions for small-field inflation. Physical review. D - particles, fields, gravitation, and cosmology, 102(10), p. 103510. American Physical Society 10.1103/PhysRevD.102.103510
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We show that initial conditions for small-field inflation can be determined quantum mechanically by introducing a suitable flattened region in the scalar potential. The inflaton is then driven toward the slow-roll attractor solution exponentially fast, desensitizing inflation from the initial velocity and partially evading the so-called overshoot problem. We give an explicit example in the context of hilltop inflation by introducing an ultra-slow-roll plateau around the maximum of the potential and analyze its effect on the phase-space trajectories.
Item Type: |
Journal Article (Original Article) |
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Division/Institute: |
10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC) 08 Faculty of Science > Institute of Theoretical Physics |
UniBE Contributor: |
Antoniadis, Ignatios |
Subjects: |
500 Science > 530 Physics |
ISSN: |
1550-7998 |
Publisher: |
American Physical Society |
Language: |
English |
Submitter: |
Esther Fiechter |
Date Deposited: |
19 Nov 2020 16:12 |
Last Modified: |
05 Dec 2022 15:42 |
Publisher DOI: |
10.1103/PhysRevD.102.103510 |
ArXiv ID: |
2008.02494 |
BORIS DOI: |
10.7892/boris.148246 |
URI: |
https://boris.unibe.ch/id/eprint/148246 |
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