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Título

Hybrid loop quantum cosmology and predictions for the cosmic microwave background

AutorCastelló Gomar, Laura ; Mena Marugán, Guillermo A. ; Martín de Blas, Daniel ; Olmedo, Javier
Fecha de publicación21-nov-2017
EditorAmerican Physical Society
CitaciónPhysical Review D - Particles, Fields, Gravitation and Cosmology 96: 103528 (2017)
ResumenWe 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.
Descripción24 pags., 10 figs., 1 tab.
Versión del editorhttps://doi.org/10.1103/PhysRevD.96.103528
URIhttp://hdl.handle.net/10261/164397
Identificadoresdoi: 10.1103/PhysRevD.96.103528
issn: 1550-7998
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