Proper time and path integral representations for the commutation function
arXiv:hep-th/9603189 · doi:10.1063/1.531559
Abstract
On the example of the quantized spinor field, interacting with arbitrary external electromagnetic field, the commutation function is studied. It is shown that a proper time representation is available in any dimensions. Using it, all the light cone singularities of the function are found explicitly, generalizing the Fock formula in four dimensions, and a path integral representation is constructed.
20 pages, LaTeX, uses pictex macros
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