An analytical approximation of the evolution of the primordial curvature perturbation in the ultraslow-roll inflation: an extended study
Abstract Cosmic inflation can enter an ultraslow-roll (USR) stage, if there is a plateau on the inflaton potential. During this stage, the primordial curvature perturbation $${{\mathscr {R}}}_k$$ R k and its power spectrum $${{\mathscr {P}}}_{{\mathscr {R}}}$$ P R can be remarkably enhanced on small...
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| Principais autores: | , |
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| Formato: | Artigo |
| Idioma: | Inglês |
| Publicado em: |
SpringerOpen
2024-03-01
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| coleção: | European Physical Journal C: Particles and Fields |
| Acesso em linha: | https://doi.org/10.1140/epjc/s10052-024-12578-z |
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