67 citations · 188 across the 6 of their papers we have counts for
12 papers
Accuracy of the growth index in the presence of dark energy perturbations
Savvas Nesseris, Domenico Sapone
We present the analytical solutions for the evolution of matter density perturbations, for a model with a constant dark energy equation of state but when the effects of the dar…
Reconstruction of the null-test for the matter density perturbations
Savvas Nesseris, Domenico Sapone, Juan García-Bellido
We systematically study the null-test for the growth rate data first presented in [S. Nesseris and D. Sapone, arXiv:1409.3697] and we reconstruct it using various combinations of d…
A novel null test for the CDM model with growth-rate data
Savvas Nesseris, Domenico Sapone
Current and upcoming surveys will measure the cosmological parameters with an extremely high accuracy. The primary goal of these observations is to eliminate some of the currently…
Comparison of piecewise-constant methods for dark energy
Savvas Nesseris, Domenico Sapone
We compare four different methods that can be used to analyze the type Ia supernovae (SnIa) data, ie to use piecewise-constant functions in terms of: the dark energy equation of st…
Curvature vs Distances: testing the FLRW cosmology
Domenico Sapone, Elisabetta Majerotto, Savvas Nesseris
We test the FLRW cosmology by reconstructing in a model-independent way both the Hubble parameter and the comoving distance via the most recent Hubble and Supernovae…
Can dark energy viscosity be detected with the Euclid survey?
Domenico Sapone, Elisabetta Majerotto, Martin Kunz +1
Recent work has demonstrated that it is important to constrain the dynamics of cosmological perturbations, in addition to the evolution of the background, if we want to distinguish…