ICTP Mathematics Seminar - Wednesday 30 November, at 15:00

[Math Group]

M A T H E M A T I C S   S E M I N A R S   2016


Wednesday 30, November, at 15:00 hrs.


Federico Zerbini (MPIM Bonn)


Title: The number theory of superstring amplitudes



Abstract: The Feynman diagram expansion of scattering amplitudes in 
perturbative superstring theory can be written (for closed strings) as a 
series of integrals over compactified moduli spaces of Riemann surfaces 
with marked points, indexed by the genus. Therefore in genus 0 it is 
reasonable to find, as it often happens in QFT computations, periods of 
M_{0,N}, which are known to be multiple zeta values. 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.


VENUE:  Luigi Stasi Seminar Room (ICTP Leonardo da Vinci Building, first 
floor)

-- 
Koutou Mabilo
ICTP Mathematics Group
Leonardo Da Vinci Building, room 106
Strada Costiera no. 11
34151 Trieste, Italy

Tel. no.: +39-040-2240455
math at ictp.it
http://math.ictp.it