Nonlinear structure formation as a probe of beyond standard model of cosmology
Starts 16 Aug 2019 14:30
Ends 16 Aug 2019 16:00
Central European Time
Leonardo Building - Luigi Stasi Seminar Room
Abstract. Future large scale structure surveys are designed to study the nature of the dark side of the universe and the physics of the initial condition of the cosmos. In this context, the understanding of the distribution of structures of the cosmic web: dark matte halos, cosmic filaments and large scale voids in one hand and their clustering and connection with the luminous matter known as bias parameter, on the other hand are all valuable probes of beyond standard model of cosmology. In this talk, I will introduce the excursion set theory (EST) of nonlinear structure formation and the non-Markov solutions of first up-crossing in EST context which opens a new venue to study the distribution of dark matter halos and the bias parameter in more realistic cases. Also I will introduce the excursion set theory of saddle points as a new framework for studying cosmic filaments. Finally, I will discuss that how the EST framework can address the void phenomena in the context of uLCDM model which is introduced to address the H_0 tension.