The University of Chicago, Department of Astronomy & Astrophysics
Résumé :
Dark energy appears to be the dominant component of the present
mass-density of the Universe, yet there is no persuasive theoretical
explanation for its existence or magnitude. While the simplest
explanation might be Einstein's cosmological constant, there are other
possibilities, including dynamical dark energy, modification of
general relativity, or back reactions of inhomogeneities.
After framing the dark-energy problem, I will discuss possible
theoretical solutions, as well as an observational program to study
the properties of dark energy.
