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"Computation and Applications of 4-loop bubbles"

Relatore: Dr York Schroder- Bielefeld University

Sala Feynman
27 Febbraio 2007 ore 12.00

There is an urgent need to advance the level of precision with which we are comparing theoretical predictions with accurate experiments. To this end, to drive perturbative calculations to a new level of precision, we need to better understand algebraic properties of the underlying field theory, to develop number-theoretic insight into the structure of the expansions employed, and to drive the field of computer-aided symbolic manipulation to new extremes. I will discuss the current status of these aspects, for processes with few "legs" which require many "loops".