YITP International molecule-type workshop 

Despite the fact that the continuous observational progress has led to the establishment of the standard cosmological model, which allows us to consistently explain the dynamics of cosmic expansion and formation/evolution of observed large-scale structure, there still remain several unclarified issues. Examples include the origin and nature of dark matter and dark energy. Further, there appear recently tensions reported in the cosmological parameters between different cosmological probes, indicating a flaw of the standard cosmological model. 

Aiming at a deeper understanding of what is happening in the Universe, there are several gigantic galaxy surveys ongoing/planned, including Subaru PFS and SPHEREx. Among these, Euclid is one representative space mission dedicated for cosmological observations, and a survey observation has just started. Further, DESI has recently announced the first data release of year one cosmological results. These surveys, sometimes called the "Stage IV" dark energy experiments, will provide galaxy imaging and spectroscopic data with unprecedented size. Prior to the advent of enormous cosmological data sets, it is thus critical to consider how to best exploit these data to further constrain dark sectors and explore new physics beyond the standard cosmological model.

The aim of this workshop is to discuss methodology to analyze galaxy survey data applied to cosmology, including the nonlinear modeling of large-scale structure of the Universe as a part of the cosmological data analysis. Targets of cosmological observations considered here will cover various types of measurements, including weak lensing, baryon acoustic oscillations, redshift-space distortions, massive neutrinos, primordial non-Gaussianity, etc. Gathering people with expertise in this research field, we exchange and share ideas and recent progress from a practical point of view. In particular, we plan to, in addition to the core participants, invite a couple of key persons involved in the ongoing surveys mentioned above (see below), and to organize a couple of informal seminars a day as well as an international mini conference which accommodates participants with wider backgrounds.

Confirmed invited persons:

Benjamin Bose (University of Edinburgh)

Giovanni Cabass (RUĐER BOŠKOVIĆ INSTITUTE)

Martin Crocce (Institute of Space Sciences, ICE-CSIC)

Kazuya Koyama (Institute of Cosmology and Gravitation, University of Portsmouth)

Massimo Pietroni (University of Parma)

Fabian Schmidt (Max-Planck Institute for Astrophysics)