Inflation without an inflaton

We propose a novel scenario in which scalar perturbations, which seed the large-scale structure of the universe, are generated without relying on a scalar field (the inflaton). In this framework, inflation is driven by a de Sitter space time, where tensor metric fluctuations (i.e., gravitational wav...

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Bibliographic Details
Main Authors: Daniele Bertacca, Raul Jimenez, Sabino Matarrese, Angelo Ricciardone
Format: Article
Language:English
Published: American Physical Society 2025-07-01
Series:Physical Review Research
Online Access:http://doi.org/10.1103/vfny-pgc2
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