359 citations · 3.2k across the 86 of their papers we have counts for
87 papers
Constraining gravity and evolving dark energy via large-scale structure and phase-space trajectories
Tshepo Mathibela, Alvaro de la Cruz-Dombriz, Savvas Nesseris
We present a joint observational analysis confronting viable modified gravity theories, specifically the Hu \& Sawicki and Starobinsky models, with background and large-scal…
Exploring Hu-Sawicki-like modified gravity with Genetic Algorithms
Chiara De Leo, Elisa Fazzari, Matteo Martinelli +1
We investigate whether viable Hu-Sawicki-like models can produce deviations from that can be tested against current background cosmological data. We adopt a…
A calibration-free null test from anisotropic BAO
Domenico Sapone, Savvas Nesseris
Baryon acoustic oscillation (BAO) analyses usually report the anisotropic shift parameters and relative to a fiducial cosmology, and these quantities…
GAME: Genetic Algorithms with Marginalised Ensembles for model-independent reconstruction of cosmological quantities
Matteo Peronaci, Matteo Martinelli, Savvas Nesseris
Genetic Algorithms (GA) are a powerful tool for stochastic optimisation and non-parametric symbolic regression, already widely used in cosmology. They are capable of reconstructing…
DESI constraints on two-field quintessence with exponential potentials
George Alestas, Marienza Caldarola, Indira Ocampo +2
We investigate a quintessence model involving two scalar fields with double-exponential potentials. This configuration allows the system as a whole to emulate the dynamics of a sin…
Forecast constraints on null tests of the CDM model with SPHEREx
Alejandro Mata Román, Indira Ocampo, Savvas Nesseris
In this work we quantify the ability of the upcoming SPHEREx survey to constrain cosmological observables and test the internal consistency of the cosmological constant and cold da…