Trans-Planckian censorship of multistage inflation and dark energy

Abstract

We explore the bound of the trans-Planckian censorship conjecture on an inflation model with multiple stages. We show that if the first inflationary stage is responsible for the primordial perturbations in the cosmic microwave background window, the $e$-folding number of each subsequent stage will be bounded by the energy scale of the first stage. This seems to imply that the lifetime of the current era of accelerated expansion (regarded as one of the multiple inflationary stages) might be a probe for distinguishing inflation from its alternatives. We also present a multistage inflation model in a landscape consisting of anti-de Sitter vacua separated by potential barriers.

arXiv comment13 pages, 4 figures; references added; updated to match published version

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Cited by in corpus (19)

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• Entanglement Entropy of Cosmological Perturbations
• $T_0$ censorship of early dark energy and AdS vacua
• Testing AdS early dark energy with Planck, SPTpol and LSS data
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