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Explore theoretical frameworks for testing dark matter-baryon interactions through cosmological observations in this astrophysics seminar. Delve into the motivation for studying dark matter particles that may weakly interact with nuclei or electrons, and discover how cosmological observables complement direct-detection experiments, particularly for probing lighter dark matter particles. Learn about two innovative theoretical projects designed to enhance sensitivity in cosmological tests: first, the expansion and implementation of the Boltzmann-Fokker-Planck (BFP) formalism that enables simultaneous study of dark matter-baryon interactions and dark matter self-interactions with arbitrary strengths, including its integration into the Boltzmann code CLASS. Second, examine a novel approach to quantifying non-Gaussianity in the Cosmic Microwave Background (CMB) that arises from the non-linear nature of dark matter-baryon momentum-exchange rates, drawing parallels to previous research on primordial black holes. Gain insights into cutting-edge theoretical tools that could revolutionize our understanding of dark matter properties through cosmological signatures, presented by a researcher actively seeking collaboration to advance these promising avenues of investigation.
