The upcoming generation of large-scale surveys (e.g., DESI, LSST, and Euclid) will observe enormous cosmological volumes with unprecedented precision. As a result, these surveys hold the promise of cosmological constraints with precision competitive with CMB experiments. On the other hand, current cosmological surveys deliver constraints that show significant tensions with more traditional approaches, in some cases up to 5 sigmas (e.g., the Hubble parameter, sigma8, etc). These tensions may result from model shortcomings, systematic effects, or even a missing element in our current understanding of the Universe. Therefore, to determine the origin of these tensions, it is necessary to utilize the full constraining power that new surveys will provide. It requires using more realistic theoretical models and non-traditional cosmological observables.

The primary objective of this session is to discuss the most recent developments in the extraction of statistical information from different types of observables, understanding of systematic effects, and in modelling techniques to constrain the cosmological model. The main topics of discussion will be:

Programme

• Cosmological constraints from the non-linear regime
• Large-scale structure probes beyond the 2-point statistics
• Understanding of the H0 tension between early- and late-Universe measurements
• Observations of the local density and velocity fields

Invited speakers

• Carolina Cuesta-Lázaro, ICC
• Ariel Sanchez, MPE
• Suhail Dhawan, Cambridge
• Rachel Gray, Glasgow

Scientific organisers

• Maciej Bilicki, CTP PAS, chair
• Jonás Chaves-Montero, IFAE, chair
• Sergio Contreras, DIPC, chair
• Wojciech Hellwing, CTP PAS, chair
• Nandita Khetan, DARK, chair
• Tomás E. Müller Bravo, ICE-CSIC, chair
• Tom Collett, ICG
• Cristina Jiménez Palau, ICE-CSIC
• Maria Kopsacheili, ICE-CSIC
• Lucía A. Pérez, Princeton University
• Mat Smith, CNRS | IN2P3
• Idit Zehavi, CASE
• Lisa Kelsey, ICG
• Radoslaw Wojtak, DARK

Contact

eas2023cosmosession @ gmail.com