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gr-qc2023
Dynamical system analysis and observational constraints of cosmological models in mimetic gravity
Alberto Fritis, Daniel Villalobos-Silva, Yerko Vásquez +2
We study the dynamics of homogeneous and isotropic Friedmann-Lemaître-Robertson-Walker cosmological models with positive spatial curvature within the context of mimetic gravity the…
gr-qc2023
Massive Scalar Field Perturbations of Black Holes Surrounded by Dark Matter
Ramón Bécar, P. A. González, Eleftherios Papantonopoulos +1
We consider scalar field perturbations in the background of black holes immersed in perfect fluid dark matter (PFDM). We find, by using the sixth order Wentzel-Kramers-Brillouin (W…