Physics (Internal)

Physics at the Cosmic Frontier with the Dark Energy Survey

This event is part of the HEE Seminar Series.

Abstract: Cosmic acceleration is one of the greatest challenges of contemporary high-energy physics. It has been addressed either by invoking a new energy component to the Universe, dark energy, or by introducing a new fundamental theory of gravity. Cosmic surveys such as the Dark Energy Survey (DES) shed light onto the problem by measuring the expansion rate history and growth of large-scale structure in the Universe. DES uses complementary techniques such as: type Ia Supernovae, galaxy cluster counts and weak gravitational lensing. In this talk, I present an overview of recent DES results, describe an initiative to develop a new future technique — cosmic sirens — and discuss the prospects for improving our understanding of cosmic acceleration with the upcoming data.