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Hybrid loop quantum cosmology and predictions for the cosmic microwave background

AuthorsCastelló Gomar, Laura ; Mena Marugán, Guillermo A. ; Martín de Blas, Daniel ; Olmedo, Javier
Issue Date21-Nov-2017
PublisherAmerican Physical Society
CitationPhysical Review D - Particles, Fields, Gravitation and Cosmology 96: 103528 (2017)
AbstractWe investigate the consequences of the hybrid quantization approach for primordial perturbations in loop quantum cosmology, obtaining predictions for the cosmic microwave background and comparing them with data collected by the Planck mission. In this work, we complete previous studies about the scalar perturbations and incorporate tensor modes. We compute their power spectrum for a variety of vacuum states. We then analyze the tensor-to-scalar ratio and the consistency relation between this quantity and the spectral index of the tensor power spectrum. We also compute the temperature-temperature, electric-electric, temperature-electric, and magnetic-magnetic correlation functions. Finally, we discuss the effects of the quantum geometry in these correlation functions and confront them with observations.
Description24 pags., 10 figs., 1 tab.
Publisher version (URL)https://doi.org/10.1103/PhysRevD.96.103528
Identifiersdoi: 10.1103/PhysRevD.96.103528
issn: 1550-7998
Appears in Collections:(CFMAC-IEM) Artículos
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