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

Wednesday, September 18, 2019 - 1:45pm

Speaker(s): 
Benjamin Hamm

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.

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Physics 298

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