Bonn 2020 – scientific programme
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GR: Fachverband Gravitation und Relativitätstheorie
GR 12: Cosmology
GR 12.4: Talk
Thursday, April 2, 2020, 14:45–15:00, H-HS IV
Causal Diamonds in Cosmology — Mauro Carfora2, Francesca Familiari2, and •Dennis Stock1 — 1University of Bremen, Center of Applied Space Technology and Microgravity (ZARM) — 2University of Pavia, Department of Physics
We discuss causal diamonds in a cosmological set-up. In particular, making use of the relations between the area associated with the diamond and the spacetime curvature, we discuss the impact of cosmological inhomogeneities. Using the Einstein field equations and given a reference cosmological model, deviations from the reference model due to inhomogeneities can be understood as additional matter terms within the model. These deviations are linked to (ideal) observations.