Jul 5 – 10, 2021
Europe/Rome timezone

Causal fermion systems: Classical gravity and beyond

Jul 5, 2021, 5:30 PM
20m
Invited talk in the parallel session Mathematical Problems of Relativistic Physics: Classical and Quantum Mathematical Problems of Relativistic Physics: Classical and Quantum

Speaker

Felix Finster (Universität Regensburg)

Description

The theory of causal fermion systems is an approach to fundamental physics. It gives quantum mechanics, general relativity and quantum field theory as limiting cases and is therefore a candidate for a unified physical theory. The dynamics of causal fermion systems is described by a variational principle called the causal action principle (for more details see https://causal-fermion-system.com).

In the talk, I will outline how and in which sense the causal action principle gives rise to classical gravity. Moreover, I will explain in various examples how to go beyond classical gravity:
- The general definition of the total mass of a static causal fermion system
- A general connection between area change and matter flux
- Geometric structures giving a setting of Lorentzan quantum geometry
We conclude with an outlook on quantum gravity.

Primary author

Felix Finster (Universität Regensburg)

Presentation materials

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Proceedings

Paper