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Abstract：
Recently, powerful computational tools and remarkable new structures for perturbative scattering amplitudes in QFT have been discovered. Apart from playing a central role in high-energy particle physics, these developments have important implications for formal QFT, string theory and mathematics. I will review some recent progress, focusing on a new formulation of scattering of gluons, gravitons and their connections, as well as new geometries underlying QFT and strings which may hint at a ``theory at infinity” for their S-matrices.
Biography:
Song He is a professor at Institute of Theoretical Physics (CAS), who has been working on QFT, string theory and mathematical physics. In recent years his works mainly focus on scattering amplitudes, gauge/gravity dualities and related areas. He has published over 80 papers with about 5000 citations.
Online meeting room：
https://meeting.tencent.com/dm/HxQkWQtGC1qb (ID: 804635348 Passcode: 123456)