[NTU String Seminar] Positive Structures in Quantum Field Theory

• Event Date: 2026-09-11
• Chen, Jhan Yu 陳詹喻
• High Energy Physics and Astrophysics High energy theory
• Speaker: Prashanth Raman (NTU)  /  Host: Prof. Pei-Ming Ho
  Place: Rm. 815, Dept. of Physics, NTU

Title: [NTU String Seminar] Positive Structures in Quantum Field Theory
Speaker: Prashanth Raman (NTU)
Time: 2026/9/11 (Fri.) 14:30
Place: Rm. 815, Dept. of Physics, NTU
 

Abstract

A variety of building blocks and observables in quantum field theory exhibit surprisingly rich positivity properties. I will review some of my recent work on these structures, focusing on complete monotonicity and the Stieltjes property and their connections to moment problems and positive geometry. I will discuss how this positivity can be turned into practical tools for approximating and numerically evaluating these objects, with particular emphasis on Feynman integrals.