CHY: a Stringy View of Field-Theory Amplitudes

May 7-9, 2018

São Paulo, Brazil

ICTP-SAIFR/IFT-UNESP

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Lecturer: Ellis Ye Yuan (IAS-Princeton, USA)

Place: IFT-Auditorium

Times: Monday-Wednesday: 11:30-13:00

Description:
This mini-course is devoted to a brief introduction of Cachazo-He-Yuan (CHY) formalism, which is a universal method for modeling perturbative S-matrix of massless particles, based on an underlying “world-sheet” (instead of the traditional Feynman diagrams). I will begin by discussing the motivating ideas and describing the formalism itself in detail. Then I will survey some of its main applications (double-copy relations, soft theorems, etc), aiming at illustrating its advantage. In the last part I will discuss several recent developments of this formalism.

There will be no application form for this activity and everyone is welcome to participate. For more information, send email to [email protected] .

Poster