Relativistic Spinning Particle As a Massive Twistor - Lecture 2

This lecture is the second part of Sangmin Lee's presentation on "Relativistic Spinning Particle As a Massive Twistor" delivered at the International Centre for Theoretical Sciences as part of the "Positive Geometry in Scattering Amplitudes and Cosmological Correlators" program. Explore advanced theoretical physics concepts connecting mathematical aspects of scattering amplitudes with cosmology. The program, organized by Nima Arkani-Hamed, Johannes Henn, Suvrat Raju, and Jaroslav Trnka, aims to bridge two different disciplines by examining structures like positive geometry, positive Grassmannian, Associahedron, and the Amplituhedron that appear in both perturbative on-shell scattering amplitudes and cosmological correlators. Gain insights into the reformulation of perturbative S-matrix using new principles and understand the fundamental objects capturing the physics of our Universe in this 1 hour and 28 minutes presentation.