Orateur
philippe brax
(IPHT Saclay)
Description
Dark matter is present from small to large scales. When dark energy couples to matter, one can integrate out the matter distribution on small enough scales and obtain effects on the dynamics of light scalars (dark energy) on large scales. I will introduce the Schwinger-Keldysh formalism to do this properly and deduce some possible unexpected (?) results for dark energy on large scales.