# Dirac Talks: Einstein's Equations, Curvature, and the Hilbert Action - II

Sponsor(s): Physics

I will continue with a short recap of parallel transport and

Riemann curvature. From here I will finally introduce the stress-energy

tensor and the notion of energy-momentum conservation. We will then

derive the Einstein equation from the Hilbert Action, and discuss the

fact that the Hilbert Action is the most general action of its type. We

will then be able to discuss the various ways that the action may be

modified in order to attain alternative theories of Gravity. Then, given

time, we will discuss a particular case of such modification, often

referred to as the "Wave Dark Matter" or "Fuzzy Dark Matter" theory.

Type: LECTURE/TALK

Contact: Arya Roy