Bonn 2020 – scientific programme

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GR: Fachverband Gravitation und Relativitätstheorie

GR 17: Fundamental Problems and General Formalism

GR 17.2: Talk

Friday, April 3, 2020, 09:50–10:10, H-HS VII

The Hawking Energy in Cosmology — •Dennis Stock — University of Bremen, Center of Applied Space Technology and Microgravity (ZARM)

The definition of gravitational energy is a complex issue in general relativity. Amongst other candidates, Hawking's quasi-local energy satisfies many natural limits, however, fails in general to be positive and monotonous. In this talk, I will discuss how one could use the Hawking energy on a past light cone in cosmology and under which circumstances it can be shown to be positive and monotonously increasing.