Relativistic Spinning Particle as a Massive Twistor - Lecture 1

This lecture is the first in a series by Sangmin Lee exploring the concept of relativistic spinning particles as massive twistors, presented as part of the "Positive Geometry in Scattering Amplitudes and Cosmological Correlators" program at the International Centre for Theoretical Sciences. Delve into the mathematical aspects of scattering amplitudes and their connections to cosmology over this 87-minute presentation. The program brings together experts from both fields to explore recent developments including unitarity methods, recursion relations, worldsheet models, bootstrap methods, and connections to positive geometry, positive Grassmannian, Associahedron, and the Amplituhedron. Learn how these concepts are pushing toward a reformulation of the perturbative S-matrix using new principles, while discovering similar structures observed in cosmological correlators that capture the physics of our Universe.