Bootstrapping Banana Loops via Unparticles: from differential equations to kinematic flow

Time：Thur., 13:30-14:30, June 4, 2026

Venue：B627, Shuangqing Complex Building

Organizer：数学物理团队

Speaker：Chen Yang

ADS Seminar

Organizers：

数学物理团队

Speaker：

Chen Yang (Scuola Normale Superiore, Pisa)

Time：

Thur., 13:30-14:30, June 4, 2026

Venue：

B627, Shuangqing Complex Building

Title：

Bootstrapping Banana Loops via Unparticles: from differential equations to kinematic flow

Abstract:

This seminar explains how banana loop correlators in cosmology can be recast as tree-level unparticle exchanges, turning loop computations into bootstrap problems. I will discuss how symmetry, singularity structure, and differential equations fix the two-site banana seed, how shift relations build higher bananas, and how kinematic flow organizes the resulting master-integral systems through graph-theoretic rules. The emphasis is conceptual: banana loops provide a controlled laboratory for extending the cosmological bootstrap beyond tree level.

DATEJune 3, 2026

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