activity
19982026
most citedShadow cast and Deflection angle of Kerr-Newman-Kasuya spacetime

212 citations · 2.2k across the 76 of their papers we have counts for

collaborators

77 papers

gr-qc2026

Tidal Response Beyond the Background Geometry in Einstein-Euler-Heisenberg Black Holes

Ramon Becar, P. A. Gonzalez, Ali Ovgun +2

We determine the quadrupolar logarithmic tidal response of electrically charged Einstein-Euler-Heisenberg black holes from the coupled static odd-parity gravitational and electroma…

gr-qc2023★ 6 cited

Phase-space analysis of torsion-coupled dilatonic ghost condensate

Manuel Gonzalez-Espinoza, Giovanni Otalora, Yoelsy Leyva +1

We studied the cosmological dynamics of a dilatonic ghost condensate field as a source of dark energy, which is non-minimally coupled to gravity through torsion. We performed a det…

gr-qc2022★ 7 cited

Dynamics of dark energy in a scalar-vector-torsion theory

Manuel Gonzalez-Espinoza, Giovanni Otalora, Yoelsy Leyva +1

We study the cosmological dynamics of dark energy in a scalar-vector-torsion theory. The vector field is described by the cosmic triad and the scalar field is of the quintessence t…

gr-qc2022

Quasinormal modes for massive charged scalar fields in Reissner-Nordström dS black holes: anomalous decay rate

P. A. González, Eleftherios Papantonopoulos, Joel Saavedra +1

The anomalous decay rate of the quasinormal modes occurs when the longest-lived modes are the ones with higher angular number. Such behaviour has been recently studied in different…

gr-qc2021

Quasinormal modes for a non-minimally coupled scalar field in a five-dimensional Einstein-power-Maxwell background

Angel Rincon, P. A. Gonzalez, Grigoris Panotopoulos +2

We study the propagation of massless scalar fields non-minimally coupled to gravity in the background of five-dimensional Einstein-power-Maxwell black holes, and using the WKB and…

gr-qc2021★ 13 cited

Inflation and Primordial Fluctuations in Gravity's Rainbow

Yoelsy Leyva, Carlos Leiva, Giovanni Otalora +1

We study slow-roll inflation and the generation of primordial fluctuations in gravity's rainbow. We obtain the second order action for scalar and tensor perturbations and th…