106 citations · 186 across the 6 of their papers we have counts for
12 papers
Analyzing Quasi-normal modes spectrum in asymptotically de Sitter black bounces and their optical appearance
G. Alencar, Albert Duran-Cabacés, A. Lima +2
This work explores asymptotically de Sitter black-bounce spacetimes, obtained as a regular extension of the Schwarzschild-de Sitter geometry via the Simpson-Visser prescription. Th…
Horizon singularity, energy conditions and shadows in time-dependent and spherically symmetric spacetime
Shin'ichi Nojiri, Sergei D. Odintsov, Diego Sáez-Chillón Gómez +1
Some dynamical spacetime solutions that describe ultra-compact objects are analysed. We show that by turning a static spacetime that describes a one-way wormhole into a dynamical t…
The gravitational wave-black hole imaging correspondence for modified black holes
David Díaz-Guerra, Ángel Rincón, Diego Rubiera-Garcia +1
Black holes (BHs) can be studied via fundamentally different observational channels that probe complementary aspects of their physics. While BH imaging provides access to the quasi…
General slow-roll inflation in gravity under the Palatini approach
Sabit Bekov, Kairat Myrzakulov, Ratbay Myrzakulov +1
Slow-roll inflation is analyzed in the context of modified gravity within the Palatini formalism. As shown in the literature, inflation in this framework requires the presence of n…
Analyzing the tension in gravity models
Sergei D. Odintsov, Diego Sáez-Chillón Gómez, German S. Sharov
The Hubble constant tension problem is analysed in the framework of a class of modified gravity, the so-called gravity. To do so, we explore two models: an exponential and a…
Constant roll inflation in multifield models
Merce Guerrero, Diego Rubiera-Garcia, Diego Saez-Chillon Gomez
Constant roll inflation is analyzed in the presence of multi scalar fields which are assumed to be described by a constant roll rate each. The different cases are studied and the c…