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Mar 2

IPN Seminar Speaker: Ruben Tikidji-Hamburyan

Mar 2, 2026, 4:00 - 5:00 PM

KB 229

 

Mar 4

4 Mar (CLIM/GEOL) Jared Nirenberg, Cold Seas in a Warmer Past

Mar 4, 2026, 4:30 - 5:30 PM

Mar 6

Topology, Algebraic Geometry, and Dynamics Seminar (TADS): Feynman graph integral on K\”ahler manifolds

Mar 6, 2026, 1:30 - 2:30 PM

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Topology, Algebraic Geometry, and Dynamics Seminar (TADS): Feynman graph integral on K\”ahler manifolds

Mar 6, 2026, 1:30 - 2:30 PM

 

Speaker: Junrong Yan, Northeastern University

Title: Feynman graph integral on K\”ahler manifolds

 

Abstract: This is joint work with Minghao Wang. In this talk, I will explain the convergence of Feynman graph integrals on closed real-analytic K\"ahler manifolds: Using Getzler’s rescaling technique, the graph integrands extend naturally to the Fulton–MacPherson compactification as forms with divisorial singularities, allowing a rigorous definition as Cauchy principal value integrals. As an application, this yields a mathematical construction of the higher-genus B-model invariants on Calabi–Yau threefolds in the sense of Bershadsky–Cecotti–Ooguri–Vafa (BCOV).

 

Date/Time: Friday, March 6, 1:30pm

Location: Exploratory Hall Room 4208

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