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Explore the fundamentals of fermionic strings in this 92-minute lecture from the String Theory 2 course (PHY453.5) delivered by Ashoke Sen at the International Centre for Theoretical Sciences. The lecture covers essential topics in supersymmetric string theories, including Free Heterotic String, Free Type II and Type I Superstring theories, interactions, picture changing operators, and amplitude computations. Designed for advanced physics students with prior knowledge in Quantum Field Theory, General Relativity, and String Theory 1, this lecture helps develop skills in computing the spectrum and interactions in supersymmetric string theories. Part of a broader course scheduled on Tuesdays and Thursdays from January 21, 2025, this lecture provides valuable insights into the complex world of theoretical physics.
