Fredagskollokvium: The Geometrical Trinity of Gravity
Jose Beltran Jimenez, University of Salamanca
General Relativity has recently turned 100 years old and it still provides the most successful
theory for the gravitational interaction. The standard lore is to interpret gravity as a manifestation of the spacetime curvature. In this talk, I will discuss the non-fundamental character of such an interpretation and I will review alternative formulations in terms of torsion and non-metricity that are equivalent to the interpretation as curvature. I will focus on the less widely known non-metricity formulation, showing that it is possible to trivialise the connection by a choice of coordinates, which is dubbed Coincident GR. The properties of some modified gravity theories based on this formulation will be briefly discussed.