This workshop brings together leading theoretical physicists from the quantum field theory and string theory communities with foremost experts in cosmology. The central goal is to explore how the universe, in its earliest moments and largest structures, can serve as a unique laboratory for testing the principles of quantum gravity and physics beyond the Standard Model. By fostering a dynamic, interdisciplinary dialogue, this workshop seeks to catalyze progress on the most pressing challenges in fundamental physics and pave the way for a new synthesis in our understanding of the cosmos.

The scientific program will focus on the critical connections between the physics of the very small and the very large. We will delve into the quantum origins of cosmological structure, string-theoretic descriptions of inflation, and the fundamental nature of the dark sector. Discussions will also confront the deep theoretical challenges posed by black holes, from the information paradox to their quantum microstates. With the dawn of gravitational wave astronomy and next-generation cosmological surveys, a key emphasis will be on translating formal theoretical concepts into concrete, testable predictions, bridging the gap between fundamental theory and observation.