Soft Particles and the Geometry of the Space of Celestial CFTs

Explore a physics seminar where Daniel Kapec from Harvard University delves into the "Celestial CFT" formalism, examining how quantum gravity in (d+2)-dimensional asymptotically flat spacetimes can be reinterpreted through a d-dimensional Euclidean CFT at the conformal boundary. Learn about the universal aspects of this correspondence, including how bulk gravitons generate boundary stress tensors and bulk gluons create boundary conserved currents. Discover the mapping between continuous spaces of vacua in the bulk and the conformal manifold of boundary CFT, gaining fresh insights into the BMS group's role in flat space holography and understanding the antisymmetric double-soft gluon theorem through the lens of infinite-dimensional vacuum manifold curvature.