Cosmic Relics in Theories with Scalar Fifth Forces

Explore the theoretical framework of scalar fifth forces and their impact on cosmic relics in this comprehensive physics lecture delivered at the Galileo Galilei Institute. Delve into advanced concepts in theoretical physics as the speaker examines how scalar field theories beyond the Standard Model can give rise to additional fundamental forces that influence the formation and evolution of cosmic structures. Learn about the mathematical formulations of scalar fifth forces and their potential observational signatures in cosmological phenomena. Investigate how these theoretical extensions to general relativity affect the dynamics of dark matter, dark energy, and other cosmic relics from the early universe. Analyze the implications for structure formation, gravitational wave propagation, and other astrophysical processes that could provide testable predictions for these modified gravity theories. Gain insights into current research methodologies used to constrain scalar fifth force models through cosmological observations and laboratory experiments.