Speaker: 曾柯又 (哈佛大学)
Abstract: In the first part of the talk, I will introduce the twistor approach to the study of celestial holography initiated by Costello and Paquette. In the second part, I will discuss a family of dualities between certain non-supersymmetric self-dual gauge theories on a large class of four-dimensional self-dual asymptotically flat backgrounds and the large-N limit of an independently defined two-dimensional chiral defect CFT. This construction proceeds via twisted holography for the type I topological string on a Calabi–Yau five-fold that fibers over twistor space.
Time: 14:00~16:00, Thursday, Jan 22. 2026
Location: R1210, SIMIS
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