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Cosmological observations such as the Cosmic Microwave Background (CMB) or the Large Scale

Structure (LSS) are typically assumed to be statistically isotropic and homogeneous. However, a

growing number of large-scale anomalies and dipoles in the literature suggest the need to revisit

these assumptions. A physically well-motivated explanation that breaks these symmetries is the

impact of the Universe's topology. Even in a flat Universe, its topology can introduce anisotropic

correlations in the CMB and the LSS. In this talk, I will present recent and ongoing work of the

COMPACT collaboration on the observational effects of the Universe's topology. I will discuss the

specific, testable predictions for the CMB and LSS, focusing on how advancements in data analysis

and future measurements (including CMB polarization) can reveal the global shape of the Universe.

Thursday September 12th 2024 time 15:30 CEST

Join IN PERSON in Aula Grassano (Physics Dept., Tor Vergata University)

or online on MS Teams: https://rebrand.ly/Seminar-CarronDuque

Ref: Marina Migliaccio (migliaccio@roma2.infn.it)

What is the topology of the Universe? A path to detection

ASTROPHYSICS SEMINAR

Javier Carrón Duque

Institute of Theoretical Physics, Madrid