Jul 5 – 10, 2021
Europe/Rome timezone

Probing modified gravity with cosmology and solutions to the Hubble tension

Jul 5, 2021, 4:50 PM
20m
Talk in the parallel session Dark Energy and the accelerating universe Dark Energy and the Accelerating Universe

Speaker

Noemi Frusciante (IA/FCUL, Lisbon (PT))

Description

The late time cosmic acceleration is one of the most puzzling phenomena in modern cosmology. Its modeling within General Relativity (GR) through the cosmological constant (L) results in the LCDM scenario. Although the latter gives a precise description of the Universe, it is known that it still contains a number of unresolved problems. These lead researchers to look for modified gravity models, for example by including additional degrees of freedom.  In this talk I will present the phenomenology and the cosmological bounds of theories consistent with the gravitational-wave event GW170817. In particular I will discuss models which solve the Hubble tension between Planck and local measurements and for which data show a statistically significant preference over LCDM.

Primary author

Noemi Frusciante (IA/FCUL, Lisbon (PT))

Presentation materials

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