Electronic Resource
Springer
International journal of theoretical physics
37 (1998), S. 2877-2893
ISSN:
1572-9575
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract We study the half-advanced and half-retardedWheeler Green function and its relation to Feynmanpropagators, first for massless equation, then, forKlein–Gordon equations with arbitrary massparameters, real, imaginary, or complex. In all cases theWheeler propagator lacks an on-shell free propagation.The Wheeler function has support inside the light-cone(whatever the mass). The associated vacuum is symmetric with respect to annihilation andcreation operators. We show with some examples thatperturbative unitarity holds, whatever the mass (real orcomplex). Some possible applications arediscussed.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1026605612226
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