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History 181B:  Modern Physics
Class 40 (4/25/01)
Renormalized quantum field theory
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Outline Facing the infinities:  renormalized QED

     Experimental stimuli

     Renormalization:  hiding the infinities
          Schwinger-Tomonaga:  QFT in full flower
          Feynman:  diagrammatics
     A conservative response to calls for radical change

War work and postwar theory

     Schwinger:  the Rad Lab and black-boxing

     Feynman:  Los Alamos and modularity
          Disassembling the diagrams
          Reassembling them:  perturbation theory
          Neutron diffusion
Names and terms
Primary Secondary
Lamb shift
Willis Lamb (1913 - ), NP 1955
Polykarp Kusch (1911-1993), NP 1955
effective charge
Sin-Itiro Tomonaga (1906-1979), NP 1965
Julian Schwinger (1918-1994), NP 1965
Richard Feynman (1918-1988), NP 1965
Freeman Dyson (1923 - )
propagator
vertex		 equivalent circuit
path-integral formulation
Copyright © Cathryn Carson 2001