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MODERN FUNCTIONAL QUANTUM FIELD THEORY: Summing Feynman Graphs

By Herbert Martin Fried
eBook
$39.00
By Herbert Martin Fried
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These pages offer a simple, analytic, functional approach to non-perturbative QFT, using a frequently overlooked functional representation of Fradkin to explicitly calculate relevant portions of the Schwinger Generating Functional (GF). In QED, this corresponds to summing all Feynman graphs representing virtual photon exchange between charged particles. It is then possible to see, analytically, the cancellation of an infinite number of perturbative, UV logarithmic divergences, leading to an...

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