4 papers
Dark energy from string theory: an introductory review
David Andriot
Dark energy, the main constituent in our expanding universe, responsible for its acceleration, is currently being observed with unprecedented precision through various experiments.…
Phantom matters
David Andriot
Cosmological observations of the recent universe suggest that dark energy equation of state parameter is growing with time, departing from a cosmological constant for which $w=…
Quintessence: an analytical study, with theoretical and observational applications
David Andriot
We focus on minimally coupled (multi)field quintessence models, of thawing type, and their realistic solutions. In a model-independent manner, we describe analytically these cosmol…
Single versus multifield scalar potentials from string theory
David Andriot, Muthusamy Rajaguru, George Tringas
In this work, we investigate the properties of string effective theories with scalar field(s) and a scalar potential. We first claim that in most examples known, such theories are…