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Unformatted text preview: kx i t E kx i L + + − − − − − Ψ = = = − Ψ h h If we run time backwards the negative energy solutions become positive energy solutions. Antiparticles: The prescription we use for handling the negative energy states was proposed by Stükelberg (1941) and Feynman (1948). The idea is that a negative energy solution describes a particle which propagates backward in time or, equivalently, a positive energy antiparticle propagating forward in time. Negativeenergy particle solutions going backward in time describe positiveenergy antiparticles going forward in time. Time ephoton ElectronPhoton Scattering Space eeTime ephoton ElectronPositron Creation & Annihilation Space e + eTime e= e + E > 0 (E) < 0 Feynman diagram!...
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This note was uploaded on 05/29/2011 for the course PHY 4064 taught by Professor Fields during the Spring '07 term at University of Florida.
 Spring '07
 FIELDS
 mechanics, Energy

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