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Light-front singularities in the Yukawa model

โœ Scribed by B.L.G. Bakker; C.-R. Ji


Book ID
103869833
Publisher
Elsevier Science
Year
2006
Tongue
English
Weight
244 KB
Volume
161
Category
Article
ISSN
0920-5632

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โœฆ Synopsis


In light-front dynamics singularites may appear in time-ordered amplitudes that are absent in the manifestly covariant treatment of a system described by the same Lagrangian. Examples are discussed for the case of the Yukawa model. It is shown that both instantaneous contributions to the fermion propagator and higher Fock components are needed to resolve the discrepancy between the two approaches.


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