Affiliation:
1. IUCAA, Post Bag 4, Ganeshkhind, Pune 411 007, India
Abstract
We use the modified propagator for quantum field based on a "principle of path integral duality" proposed earlier in a paper by Padmanabhan to investigate several results in QED. This procedure modifies the Feynman propagator by the introduction of a fundamental length scale. We use this modified propagator for the Dirac particles to evaluate the first order radiative corrections in QED. We find that the extra factor of the modified propagator acts like a regulator at the Planck scales thereby removing the divergences that otherwise appear in the conventional radiative correction calculations of QED. We find that: (i) all the three renormalization factors Z1, Z2, and Z3 pick up finite corrections and (ii) the modified propagator breaks the gauge invariance at a very small level of [Formula: see text]. The implications of this result to generation of the primordial seed magnetic fields are discussed.
Publisher
World Scientific Pub Co Pte Lt
Subject
Space and Planetary Science,Astronomy and Astrophysics,Mathematical Physics
Cited by
26 articles.
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