Ponente
Sr.
Carlos García García
(IFF-CSIC)
Descripción
The late time acceleration of the Universe can be characterized in terms of an extra, time dependent, component of the universe -- dark energy. The simplest proposal for dark energy is quintessence, a scalar field, phi, whose dynamics is solely dictated by its potential, V(phi). In this simple case, just an extra function of the background is necessary to describe the evolution of the dark energy density. We find its time dependence for a broad family of potentials. Using this information, we propose a parametrization which is accurate and in terms of which we construct physical priors for quintessence.
