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Explore the fundamental physics underlying the cosmic microwave background (CMB) in this comprehensive lecture from the V Joint ICTP-Trieste/ICTP-SAIFR School on Cosmology. Delve into advanced concepts of CMB physics as presented by Emmanuel Schaan from SLAC National Accelerator Laboratory, building upon foundational knowledge from the first class in this series. Learn about the theoretical framework governing CMB formation, temperature and polarization anisotropies, and the statistical methods used to extract cosmological parameters from CMB observations. Examine the relationship between primordial density fluctuations and the observed CMB patterns, including the physics of recombination, Thomson scattering, and acoustic oscillations in the early universe. Understand how CMB measurements provide crucial constraints on cosmological models, dark matter, dark energy, and inflation. Gain insights into current and future CMB experiments and their role in precision cosmology, while developing the mathematical tools necessary to analyze CMB data and interpret results within the context of modern cosmological theory.
