GeomGravX: 10 Years of Geometric Foundations of Gravity and eXtensions (in Tartu)

Teleparallel regularization of the gravitational action

Not scheduled

20m

A106 (Physicum, University of Tartu)

Oral talk

Speaker

Martin Krssak (Comenius University in Bratislava)

Description

Classical solutions with a finite action play an important role in the path integral quantization of gravity, black hole thermodynamics, and holography. While the teleparallel action avoids the need for boundary terms, it depends on a non-dynamical spin connection that effectively encodes the regularization. We study different choices of this spin connection, as well as various methods for evaluating the gravitational action. We show that consistent results require properly accounting for the role of singularities, and we examine the issue of uniqueness, which leads us to identify underlying symmetries of the teleparallel action.