String Theory seminar - Congkao Wen Seminar

Abstract: In this talk, I will discuss the connections between flat-space amplitudes and holographic correlators via AdS/CFT correspondence. The concrete example we will study is 10D type IIB superstring amplitudes in the \alpha’ expansion and correlation functions in N=4 SYM in the large-N expansion. The 10D type IIB superstring amplitudes at low orders of \alpha’ expansion (BPS ones) are known exactly, both perturbative terms and non-perturbative terms. This talk is to derive such exact results from CFT side. The technique tool we will be using is the supersymmetric localization, which allows us to study the correlators (in 1/N expansion) to all orders in Yang-Mills coupling, which we find to precisely match with the results obtained from 10D type IIB string amplitudes.