The Time Machine Factory [unspeakable, speakable] on Time Travel - TMF2024

The effect of gravitational energy on horizon thermodynamics

25 Sept 2024, 16:05

25m

Vallauri Hall (INRiM historical building, Turin)

talk Session VI. Information paradox and thermodynamics of gravity

Speaker

Marek Liška (Charles University, Prague)

Description

Thermodynamics of local causal horizons binds together gravity, quantum entanglement and the Unruh effect in a relatively simple setting. Moreover, it offers an elegant way to derive the equations governing the gravitational dynamics. A central role in this derivation is played by the causal structure of the spacetime and the equivalence principle(s). In my talk, I explore how the quasi-local energy of the gravitational field affects the thermodynamics of local causal horizons, and whether it can lead to corrections to the Einstein field equations. I also comment on the role of the energy conditions in this approach.

Presentation materials

Liška_Torino 2024.pdf