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Explore fermionic strings in this advanced physics lecture delivered by Ashoke Sen at the International Centre for Theoretical Sciences. Delve into the sophisticated realm of supersymmetric string theories, focusing on the mathematical and physical foundations of fermionic string formulations. Master the intricacies of Free Heterotic String theory, examining its unique properties and mathematical structure. Investigate Free Type II and Type I Superstring theories, understanding their distinct characteristics and applications in theoretical physics. Learn to work with picture changing operators, essential tools for manipulating fermionic string states and ensuring consistent amplitude calculations. Develop computational skills for calculating string theory amplitudes, including techniques for handling supersymmetric contributions and fermionic zero modes. Understand the spectrum of supersymmetric string theories and how fermionic degrees of freedom contribute to the physical states. Examine the interactions between different string modes and their implications for particle physics phenomenology. Build upon foundational knowledge of Quantum Field Theory, General Relativity, and introductory String Theory to tackle these advanced concepts in modern theoretical physics.
