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Bonn 2020 – wissenschaftliches Programm

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MP: Fachverband Theoretische und Mathematische Grundlagen der Physik

MP 1: Gravity: Classical and Quantum

MP 1.1: Vortrag

Montag, 30. März 2020, 12:00–12:20, H-HS VII

Disformal transformations in Weitzenböck geometry — •Manuel Hohmann — University of Tartu, Tartu, Estonia

We study disformal transformations in the context of scalar extensions to teleparallel gravity, in which the gravitational interaction is mediated by the torsion of a flat, metric compatible connection. This geometry, also known as Weitzenböck geometry, provides an alternative background geometry also for other field theories. We find a generic class of scalar-torsion actions which is invariant under disformal transformations, and which possesses different invariant subclasses. For the most simple of these subclasses we explicitly derive all terms that may appear in the action. We propose to study actions from this class as possible teleparallel analogues of healthy beyond Horndeski theories, or degenerate higher-order scalar tensor (DHOST) theories.

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