8.962 | Spring 2020 | Graduate

General Relativity

Video Lectures

Lecture 18: Cosmology I

Description: Cosmology and cosmological spacetimes. This is the first spacetime we compute using a symmetry principle. By requiring that a spacetime be spatially maximally symmetric (i.e., that it have the largest number of possible Killing vectors), we constrain the functional form of its metric. Imposing the Einstein field equations, we develop a pair of simple equations that control how the overall scale of this spacetime evolves. The properties of the matter and energy which fill this universe then determine the universe’s geometry and how it evolves with time.

Instructor: Prof. Scott Hughes

Course Info

As Taught In
Spring 2020
Learning Resource Types
Lecture Videos
Problem Sets