Meetings

Observational cosmology is approaching a new era with a surge of spectroscopic galaxy redshift surveys all aimed at understanding the accelerated expansion of the Universe. A few notable examples are the Dark Energy Spectroscopic Instrument (DESI) and the ESA Euclid mission, which are obtaining their first scientific results. The primary probe of these surveys will be the baryon acoustic oscillations (BAO) imprinted in the large-scale structure (LSS) traced by galaxies. Galaxy clustering and the BAO probe of the expansion history of the Universe were proven by the hugely successful surveys of the last decade (BOSS, eBOSS, WiggleZ). The advancements in theory and analysis methods of LSS with these surveys brought us to the current point of achieving percent-level constraints on the parameters that describe the flat ΛCDM cosmological model. However, the increasingly precise measurements have only deepened the enigma surrounding the Λ term and dark energy that has been open for over 30 years.

This meeting, intended to be the final meeting for this project, aimed to discuss the latest advancements in the analysis of LSS, exploiting both lower- and higher-order statistics from an observational and theoretical perspective, while also considering all the issues and mitigation strategies that need to be addressed in real data analysis. In particular, all the main results of the project were presented and discussed. Invited speakers included well-known international experts on galaxy clustering, both from the theoretical and the observational side.
Following the same structure of the PRIN2022 project, the meeting was divided into three slots: one related to "Observations", one related to "LSS analysis", and one on "Simulations and Machine learning for LSS".

More details can be found at https://indico.ict.inaf.it/event/3125/overview .

Invited Speakers: Will Percival (University of Waterloo), Hector Gil Marin (Universitat de Barcelona), Zachary Slepian (University of Florida), Francisco Villaescusa-Navarro (Simons Foundation), Carmelita Carbone (INAF).

Panel discussion led by Luigi Guzzo (University of Milan) and Enzo Branchini (University of Genova).