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oai:docta.ucm.es:20.500.14352/884622023-10-28T02:00:06Zcom_20.500.14352_14col_20.500.14352_15

Classical and quantum fate of the little sibling of the big rip in f (R) cosmology Borislavov Vassilev, Teodor Bouhmadi Lopez, Mariam Martín Moruno, María Del Prado 52 Modified gravity Universe Worse Astrofísica 21 Astronomía y Astrofísica The little sibling of the big rip is a cosmological abrupt event predicted by some phantom cosmological models that could describe our Universe. When this event is approached the observable Universe and its expansion rate grow infinitely, but its cosmic derivative remains finite. In this work we have obtained the group of metric f(R) theories of gravity that reproduce this classical cosmological background evolution. Furthermore, we have considered the quantization of some of the resulting models in the framework of quantum geometrodynamics, showing that the DeWitt criterion can be satisfied. Therefore, as it also happens in general relativity, this event may be avoided in f(R) quantum cosmology. Fundación Vasca para la Ciencia, Ikerbasque Gobierno Vasco Ministerio de Economia y Competitividad (MINECO) AEI/FEDER, UE Depto. de Física Teórica Fac. de Ciencias Físicas Instituto de Física de Partículas y del Cosmos (IPARCOS) TRUE pub 2023-10-26T15:51:26Z 2023-10-26T15:51:26Z 2019-10-10 journal article VoR https://hdl.handle.net/20.500.14352/88462 2470-0010 10.1103/PhysRevD.100.084016 2470-0029 eng IT956-16 info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/FIS2017-85076-P/ES/GRAVITACION Y FISICA DEL COSMOS/ FIS2016-78859-P open access application/pdf American Physical Society