Speaker
Description
General relativity is conventionally described by the Einstein-Hilbert action in terms of the curvature of the Levi-Civita connection. However, this formulation does not come without foundational issues. It needs to be supplemented by boundary terms in order for it to have a well-defined variational principle as well as finite sensible derivations of quantities such as mass. Boundary terms can be added ad-hoc, or by changing the starting point for the formulation of general relativity by the geometric condition of teleparallelism. Thus, changing the geometric foundations of gravity. It also turns out that in the field of extended geometry the Eintein-Hilbert action is insufficient as a starting point, while teleparallel theories of gravity works. This poster presentation will give an overview of the different formulations of teleparallel formulations of general relativity, what extended geometry is and why it is motivated. The special case of double geometry will also be presented.