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High Energy Physics - Phenomenology

Title: Fermions, Gauge Theories, and the Sinc Function Representation for Feynman Diagrams

Authors: Dmitri Petrov (1), Richard Easther (1 and 2), Gerald Guralnik (1), Stephen Hahn (1), Wei-Mun Wang (3) ((1) Brown University, (2) Columbia University, (3) University of Pennsylvania)
Abstract: We extend our new approach for numeric evaluation of Feynman diagrams to integrals that include fermionic and vector propagators. In this initial discussion we begin by deriving the Sinc function representation for the propagators of spin-1/2 and spin-1 fields and exploring their properties. We show that the attributes of the spin-0 propagator which allowed us to derive the Sinc function representation for scalar field Feynman integrals are shared by fields with non-zero spin. We then investigate the application of the Sinc function representation to simple QED diagrams, including first order corrections to the propagators and the vertex.
Comments: 10 pages, Latex, 9 figures
Subjects: High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Lattice (hep-lat); High Energy Physics - Theory (hep-th)
Journal reference: Phys.Rev. D63 (2001) 105001
DOI: 10.1103/PhysRevD.63.105001
Report number: BROWN-HET-1125
Cite as: arXiv:hep-ph/0010143
  (or arXiv:hep-ph/0010143v1 for this version)

Submission history

From: Dmitri Petrov [view email]
[v1] Fri, 13 Oct 2000 20:14:58 GMT (26kb)