2026-06-01T01:19:42Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/334832023-08-06T01:22:33Zcom_20.500.14352_14col_20.500.14352_15

Kerr-Newman black holes in f(R) theories Cembranos, Pilar Cruz Dombriz, Álvaro de la Jimeno Romero, Pablo 51-73 Black holes thermodynamics modified gravity theories f(R) models Física matemática In the context of f(R) modified gravity theories, we study the Kerr-Newman black hole solutions. We study nonzero constant scalar curvature solutions and discuss the metric tensor that satisfies the modified field equations. We conclude that, in the absence of a cosmological constant, the black holes (BHs) existence is determined by the sign of a parameter h dependent of the mass, the charge, the spin and the scalar curvature. Different values of this parameter lead to diverse astrophysical objects, such as extremal and marginal extremal BHs. Thermodynamics of BHs are then studied, as well as their local and global stability. We analyze these features in a large variety of f(R) models. We remark the main differences with respect to general relativity and show the rich thermodynamical phenomenology that characterizes this framework. MINECO (Spain) Consolider-Ingenio MULTIDARK ACGC (University of Cape Town, South Africa) Programa de Formacion de Investigadores, DEUI (Basque Government, Spain) Depto. de Análisis Matemático y Matemática Aplicada Fac. de Ciencias Matemáticas TRUE pub 2023-06-19T13:23:20Z 2023-06-19T13:23:20Z 2014-01 journal article https://hdl.handle.net/20.500.14352/33483 0219-8878 10.1142/S0219887814500017 eng FIS 2008-01323 FPA 2008-00592 CSD2009-00064 open access application/pdf World Scientific