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Speaker: Dr. Tomotake Matsumura, Kavli IPMU, the Univ. of TokyoDate/Time: February 28, 2025 / 12 noon central.Location: NCSA 1040Zoom: https://illinois.zoom.us/j/82318062756?pwd=M3g1MFF6cytsOWFEbmU0UW1XWVoxQT09Title: Physics of the Early Universe Using CMB Polarization From Space, LiteBIRDAbstract: The measurement of the cosmic microwave background (CMB) has played a crucial role in establishing the ΛCDM cosmological model. The next frontier is exploring physics beyond the Standard Model, such as inflation, neutrino mass, and cosmic birefringence, through CMB polarization. Achieving this requires high-sensitivity observations across multiple frequencies. Space-based CMB missions provide a unique opportunity for full-sky coverage with broad frequency access, complementing ground-based telescopes. In this talk, I will introduce the scientific motivation for CMB observations from space, provide an overview of LiteBIRD, and discuss the synergy between space and ground-based experiments in advancing our understanding of fundamental physics.