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## April 27, 2000 , 4:00pm in Strosacker Auditorium

Gerardus 't Hooft, University of Utrecht, The Netherlands

#### A Confrontation With Infinity

Early attempts at constructing realistic models for the weak
interaction were offset by the emergence of infinite, hence
meaningless, expressions when one tried to derive the radiative
corrections. When models based on gauge theories with Higgs
mechanism were discovered to be renormalizable, the bothersome
infinities disappeared --- they cancelled out. This success may
have seemed to be due to mathematical sorcery, but it was actually
based on physical insights, which will be explained in the
lecture.

Host: CWRU Physics Dept