Subject: PHY 3091 oratory topic
From:"Joe Russo" <shrffrosco@hotmail.com>
Date: Sun, 12 Jan 2003 23:57:51 -0500
To: wahl@hep.fsu.edu

The following is the outline for Joe Russo's talk on QED:

I.  Introduction
   a.  What is QED?
   b.  What does it hope to explain?

II.  Calculating probabilities
    a.  Probabilities as squared arrows (probablility amplitudes)
    b.  Frequency as a stopwatch, the direction of the arrow
    c.  Probability as a vector sum of all possibilities )arrows)

III.  Multiple paths of light
     a.  Adding all possible paths
     b.  Canceling out arrows (diffraction)
     c.  Adding parallel arrows (lenses)
     d.  Probability of multiple events ("shrinking and turning")

IV.  Electron interactions
    a.  Absorbing and emitting photons
    b.  Multiple possibilities for a single event
        i.  simple events
        ii.  counterintuitive events, i.e. reverse time travel as a
             positron
    c.  The more interactions per event, the lower the probability
    d.  Applications

V.  Conclusion
   a.  Principle of least action
   b.  Sum over histories
   c.  Uses of Feynman diagrams
   d.  Impact on QCD

VI.  Questions