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WS19/20 – Abstract
Ignacy Sawicki
(Prag)
7.11.2019
Modified gravity in cosmology after GW170817 (PRETALK for students at 15:30 h)
I will review the existing and sometimes growing tensions in cosmological observations as a motivation for a dynamical mechanism for accelerating the expansion of the universe alternative to a cosmological constant. The observation of gravitational waves has constrained the theory space for such ideas, but possible dynamical models remain. I will discuss their phenomenology and how we expect to constrain them using upcoming cosmological data.
