RT Journal Article
T1 Alleviation of anomalies from the nonoscillatory vacuum in loop quantum cosmology
A1 Martín Benito, Mercedes
A1 Neves, Rita B.
A1 Olmedo, Javier
AB In this work, we investigate observational signatures of a primordial power spectrum with exponential infrared suppression, motivated by the choice of a nonoscillatory vacuum in a bouncing and inflationary geometry within loop quantum cosmology. We leave the parameter that defines the scale at which suppression occurs free and perform a Bayesian analysis, comparing with cosmic microwave background data. The data show a preference for some of the suppression to be within the observable window. Guided by this analysis, we choose concrete illustrative values for this parameter. We show that the model affects only slightly the parity anomaly, but it is capable of alleviating the lensing and power suppression anomalies.
PB American Physical Society
SN 2470-0010
YR 2023
FD 2023-11-07
LK https://hdl.handle.net/20.500.14352/113823
UL https://hdl.handle.net/20.500.14352/113823
LA eng
NO M. Martín-Benito, R. B. Neves, and J. Olmedo, Alleviation of anomalies from the nonoscillatory vacuum in loop quantum cosmology, Phys. Rev. D 108, 103508 (2023).
NO SFRH/BD/143525/2019
NO Ministerio de Ciencia e Innovación (España)
NO Agencia Estatal de Investigación  (España)
NO European Commission
NO Fundação para a Ciência e a Tecnologia (Portugal)
NO Junta de Andalucía
NO Universidad de Granada
DS Docta Complutense
RD 5 abr 2025