QCD Seminars

Symbol letters of Feynman integrals from Gram determinants

by xiaofeng xu

Europe/Zurich
4/3-006 - TH Conference Room (CERN)

4/3-006 - TH Conference Room

CERN

110
Show room on map
Description

Symbol letters are crucial for analytically calculating Feynman integrals in terms of iterated integrals. We present a novel method to construct the symbol letters for a given integral family without prior knowledge of the canonical differential equations, and demonstrate its effectiveness in solving non-trivial problems with multiple loops and legs. Using the method, we successfully bootstrap the canonical differential equations for a two-loop five-point family with two external masses and for a three-loop four-point family with two external masses, which were previously unknown in the literature. We anticipate that our method can be applied to a wide range of cutting-edge calculations in the future.

Zoom Meeting ID
62752332519
Host
Elena Gianolio
Alternative hosts
Michelangelo Mangano, Pascal Pignereau, Juan M. Cruz Martinez, Simone Zoia, John Cassar, Silvia Ferrario Ravasio
Passcode
37431264
Useful links
Join via phone
Zoom URL