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Explore multi-particle production in quantum chromodynamics (QCD) and gravity at high energies through this comprehensive lecture by Raju Venugopalan from Brookhaven National Lab. Delve into the remarkable double copy relations between QCD and gravitational theories, examining how these connections reveal strong parallels in emergent shockwave dynamics. Learn about the derivation of BFKL renormalization group equations for multi-gluon production, whose dynamics are captured by a 2-dimensional reggeon effective field theory, with identical methods applying to multi-graviton production. Discover how BFKL RG evolution generates non-perturbative wee parton states of maximal occupancy, leading to many-body dynamics described as a Color Glass Condensate (CGC). Understand the universal shockwave picture that emerges for deeply inelastic scattering and hadron-hadron collisions, where strongly correlated dynamics provides an ab initio description of quark-gluon plasma formation. Examine how gluon radiation in the CGC effective field theory has a double copy in gravitational shockwave collisions, describing multi-particle production in strong fields, self-force and tidal contributions, and both classical and quantum noise in geodesic focusing. Gain insights into how this framework opens an effective field theory window into gravitational wave radiation and black hole formation, connecting high-energy particle physics with gravitational phenomena through fundamental theoretical principles.
