Introduction to Cosmological Perturbation Theory

Explore the foundations of cosmological perturbation theory in this comprehensive lecture by Ghazal Geshnizjani from the University of Waterloo. Delivered as part of the 2022-2023 Low Regularity Physics and Geometry Seminar at the Fields Institute, delve into the mathematical framework used to understand the evolution of small fluctuations in the early universe. Gain insights into how these perturbations lead to the formation of large-scale structures we observe today, such as galaxies and galaxy clusters. Learn about the key concepts, equations, and applications of this crucial theory in modern cosmology, essential for researchers and advanced students in the fields of theoretical physics and astrophysics.