Speaker: Wenjie Ma
Abstract: In the first part of the talk, I will dereve the nonperturbative celestial optical theorem from the unitarity of S-matrix. This theorem provides a set of nonperturbative bootstrap equations of the conformal partial wave (CPW) coefficients. The celestial optical theorem implies that the imaginary part of CPW coefficient with appropriate conformal dimensions is non-negative. By making certain assumptions and using the celestial optical theorem, we derive nonperturbative results concerning the analytic structure of CPW coefficients.
In the second part, I will show how a specific CPW coefficient in CCFT can be used to fix all other CPW coefficiets. Moreover, I will discuss the connection between this CPW coefficient and scattering amplitude.
Time: 4:00 pm, Wednesday, 13th November, 2024
Location: Room 1610 at SIMIS, Block A, No. 657 Songhu Road, Yangpu District, Shanghai
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