2026-04-17T05:39:15Zhttps://recercat.cat/oai/requestoai:recercat.cat:2445/2167012025-12-05T16:12:44Zcom_2072_1057col_2072_478904col_2072_478917
RECERCAT
author
Gomez, Cesar
author
Jiménez, Raúl (Jiménez Tellado)
2024-11-22T16:39:49Z2024-11-22T16:39:49Z2023-01-012024-11-22T16:39:49Z
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.
cc-by (c) Gomez, Cesar, et al., 2023 http://creativecommons.org/licenses/by/3.0/es/ info:eu-repo/semantics/openAccess
Fluctuacions (Física)
Cosmologia
Gravitació
Fluctuations (Physics)
Cosmology
Gravitation
The quantum origin of quasi de Sitter: a model independent quantum cosmological tilt
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion