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Particle trajectories in metric affine spacetimes: observing torsion with a WKB approach.

We are pleased to initiate our seminar session this year with a talk by our colleague Simon Boudet, who will be visiting our Department until the end of December 2021. 

Simon got his master degree at the university of Rome" La Sapienza" in 2019, with a thesis entitled "Implementation of Ashtekar variables in the Palatini f(R) theory of gravity", where he dealt with a generalization of the Loop Quantum Gravity formalism to scalar tensor theories. Currently, his research activity mainly focuses on classical and semiclassical aspects of metric affine models of gravity, with special emphasis on compact objects physic and cosmological implementations.

The title and abstract of his talk are the following: 

TITLE: Particle trajectories in metric affine spacetimes: observing torsion with a WKB approach.

ABSTRACT: In this talk I will review some aspects of trajectories followed by test particles in metric affine theories of gravity. Firstly, I will introduce the notions of geodesic motion and autoparallel paths, showing as within an eikonal  approximation photon do not carry information about torsion and nonmetricity. Then, I will discuss the case of fermions, and I will derive, according a WKB method, the modification induced by torsion to geodesic trajectories. Finally, I will briefly sketch some hypothetically observable phenomena related to neutrinos.

Coordinates: Tuesday October 19th at 10:30 in the seminar room of the Theoretical Physics Department.

Follow this session online via BigBlueButton.

Also on our YouTube channel. 

Photo by Solen Feyissa on Unsplash