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2023-01-01

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cc-by (c) Gomez, Cesar, et al., 2023
Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/216701

The quantum origin of quasi de Sitter: a model independent quantum cosmological tilt

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https://doi.org/10.48550/arXiv.2012.04003

Abstract

In inflationary cosmology the quasi de Sitter graceful exit allows us to measure the quantum features of the primordial dS phase, in particular, the lack of scale invariance parametrized by the spectral index . In this article we summarize previous work on how the underlying primordial scaling law is implemented in the dS quantum Fisher information of the dS planar ground state (dSQFI). At large scales the dSQFI unequivocally sets, without any qdS input, the value of to be 0.9672. This value is independent of the tensor to scalar ratio whose value requires model dependent input. In addition the dSQFI predicts, at large scales, a small running compatible with the current experimental results. Other phenomenological consequences of the dSQFI for small scales, will be discussed in a future publication.

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Fluctuacions (Física), Cosmologia, Gravitació

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Fluctuations (Physics), Cosmology, Gravitation

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Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB))

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GOMEZ, Cesar and JIMÉNEZ, Raúl (Jiménez Tellado). The quantum origin of quasi de Sitter: a model independent quantum cosmological tilt. Journal of Cosmology and Astroparticle Physics. 2023. Vol. 36, num. 1-13. ISSN 1475-7516. [consulted: 14 of August of 2026]. Available at: https://hdl.handle.net/2445/216701

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