Equivalence of Light-Front and Covariant Field Theory

Details Equivalence of Light-Front and Covariant Field Theory Equivalence of Light-Front and Covariant Field Theory

1994-12-19

arxiv.org/abs/hep-ph/9412315v1

Phys.Rev. D52 (1995) 5954-5979

Physics

High Energy Physics

High Energy Physics - Phenomenology

47 Pages, LaTeX with LaTeX figures included in the text

Scientific paper

10.1103/PhysRevD.52.5954

In this paper we discuss the relation between the standard covariant quantum field theory and light-front field theory. We define covariant theory by its Feynman diagrams, whereas light-front field theory is defined in terms of light-cone time-ordered diagrams. A general algorithm is proposed that produces the latter from any Feynman diagram. The procedure is illustrated in several cases. Technical problems that occur in the light-front formulation and have no counterpart in the covariant formulation are identified and solved.

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