Posted in

Speaker:

Federico Zerbini
Affiliation:

IMPRS
Date:

Tue, 2017-02-07 14:00 - 15:00
Location:

MPIM Lecture Hall
Parent event:

Seminar on Algebra, Geometry and Physics The Feynman diagram expansion of scattering amplitudes in perturbative superstring theory can

be written as a series of integrals over compactified moduli spaces of Riemann surfaces with marked

points, indexed by the genus.

In genus 0 it is known that the amplitude can be expressed in terms of periods of M_{0,N}, which

are just multiple zeta values, by a theorem of Brown.

In this talk I want to report on recent advances in the genus 1 amplitude, which are related to the

development of 2 different generalizations of classical multiple zeta values, namely elliptic multiple

zeta values and conical sums.

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