Domenico Sapone

TL;DR: Euclid is a European Space Agency medium-class mission selected for launch in 2020 within the cosmic vision 2015-2025 program as discussed by the authors, which will explore the expansion history of the universe and the evolution of cosmic structures by measuring shapes and red-shift of galaxies as well as the distribution of clusters of galaxies over a large fraction of the sky.

TL;DR: This review is meant to provide a guide to the scientific themes that will underlie the activity of the group during the preparation of the Euclid mission and discusses five broad topics: dark energy and modified gravity, dark matter, initial conditions, basic assumptions and questions of methodology in the data analysis.

TL;DR: In this paper, the authors introduce a convenient parameterization of dark energy models that is general enough to include several modified gravity models and generalized forms of dark energies, taking into account the linear perturbation growth factor, the anisotropic stress and the modified Poisson equation.

TL;DR: It is shown explicitly that a generalized dark energy model can match the growth rate of the Dvali-Gabadadze-Porrati model and reproduce the 3+1 dimensional metric perturbations.

TL;DR: In this paper, the authors present validated Euclid cosmological forecasts for galaxy clustering, weak lensing, and the combination thereof, which combine both theoretical and observational ingredients for different Cosmological probes.