Toshiki Takadera -- "Halos and voids in the EFT of dark energy"

Thursday 12 Mar 2026, 16:00 → 18:00 Asia/Seoul

The large-scale structure of the Universe is one of the most promising probes of the nature of gravity. In this talk, I focus on halos and voids and discuss their evolution and abundance in the Horndeski theory and DHOST theories beyond Horndeski. I use the Effective Field Theory (EFT) of dark energy framework to investigate the impact of individual EFT parameters on the formation and abundance of halos and voids. I also discuss constraints on EFT parameters derived from halo formation.