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MP: Fachverband Theoretische und Mathematische Grundlagen der Physik

MP 8: Field Theory

MP 8.3: Vortrag

Mittwoch, 21. März 2018, 18:50–19:10, Z6 - SR 1.012

From spacetime symmetries to "good tetrads" in teleparallel gravity — •Manuel Hohmann — Universität Tartu, Tartu, Estland

General teleparallel theories of gravity, which have originally been formulated in terms of a tetrad only, can be formulated covariantly with respect to local Lorentz transformations by introducing a flat spin connection as an additional gauge degree of freedom. The corresponding field equations are similar for a wide range of theories and can be solved either by a suitable spin connection, or in the Weitzenböck gauge of vanishing spin connection by a suitable ("good") tetrad. We discuss the geometric meaning of this condition, and show how spacetime symmetries can aid in solving the connection field equations. A number of example solutions will be provided.