Speaker
Vojtech Pravda
(Institute of Mathematics of the Czech Academy of Sciences)
Description
Universal spacetimes simultaneously solve vacuum field equations of all metric theories of gravity with the Lagrangian constructed from the Riemann tensor and its covariant derivatives of arbitrary order. For spacetimes that are sufficiently “close” to universal spacetimes, the field equations of any theory are also considerably simplified. We introduce one such class of spacetimes - almost universal spacetimes and study the (theory-dependent) form of the resulting field equations and their solutions.
Primary author
Vojtech Pravda
(Institute of Mathematics of the Czech Academy of Sciences)
