532 citations · 2.2k across the 48 of their papers we have counts for
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Stable bouncing solutions in Teleparallel Horndeski gravity: violations of the no-go theorem
Bobomurat Ahmedov, Konstantinos F. Dialektopoulos, Jackson Levi Said +3
In order to have singularity-free solutions at the beginning of the Universe, we need to violate the null energy condition. In the general class of Horndeski gravity, there are hea…
Quasiperiodic oscillations around hairy black holes in Horndeski gravity
Javlon Rayimbaev, Konstantinos F. Dialektopoulos, Furkat Sarikulov +1
Testing gravity theories and their parameters using observations is an important issue in relativistic astrophysics. In this context, we investigate the motion of test particles an…
Cosmological Perturbations in the Teleparallel analog of Horndeski gravity
Bobomurat Ahmedov, Konstantinos F. Dialektopoulos, Jackson Levi Said +3
In this work we study the cosmological perturbations in Bahamonde-Dialektopoulos-Levi Said (BDLS) theory, i.e. the teleparallel analog of Horndeski gravity. In order to understand…
Gravitational Collapse in pure Gauss-Bonnet gravity
Konstantinos F. Dialektopoulos, Daniele Malafarina, Naresh Dadhich
We study the process of gravitational collapse in pure Gauss-Bonnet gravity. In the homogeneous dust collapse, we show that the pure Gauss-Bonnet theory has gravitational dyn…
Neural network reconstruction of scalar-tensor cosmology
Konstantinos F. Dialektopoulos, Purba Mukherjee, Jackson Levi Said +1
Neural networks have shown great promise in providing a data-first approach to exploring new physics. In this work, we use the full implementation of late time cosmological data to…
Neural network reconstruction of cosmology using the Pantheon compilation
Konstantinos F. Dialektopoulos, Purba Mukherjee, Jackson Levi Said +1
In this work, we reconstruct the Hubble diagram using various data sets, including correlated ones, in Artificial Neural Networks (ANN). Using ReFANN, that was built for data sets…