Light-front singularities in the Yukawa model

B.L.G. Bakker; C.R. Ji

doi:10.1016/j.nuclphysbps.2006.08.004

Light-front singularities in the Yukawa model

B.L.G. Bakker, C.R. Ji

Research output: Contribution to Journal › Article › Academic › peer-review

Abstract

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. © 2006 Elsevier B.V. All rights reserved.

Original language	English
Pages (from-to)	15-20
Journal	Nuclear Physics B. Proceedings Supplement
Volume	161
DOIs	https://doi.org/10.1016/j.nuclphysbps.2006.08.004
Publication status	Published - 2006

Bibliographical note

Times Cited: 0 8th Workshop on Light-Cone QCD and Nonperturbative Hadron Physics 2005 Cairns, AUSTRALIA

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10.1016/j.nuclphysbps.2006.08.004

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title = "Light-front singularities in the Yukawa model",

abstract = "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. {\textcopyright} 2006 Elsevier B.V. All rights reserved.",

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note = "Times Cited: 0 8th Workshop on Light-Cone QCD and Nonperturbative Hadron Physics 2005 Cairns, AUSTRALIA",

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AU - Bakker, B.L.G.

AU - Ji, C.R.

N1 - Times Cited: 0 8th Workshop on Light-Cone QCD and Nonperturbative Hadron Physics 2005 Cairns, AUSTRALIA

PY - 2006

Y1 - 2006

N2 - 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. © 2006 Elsevier B.V. All rights reserved.

AB - 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. © 2006 Elsevier B.V. All rights reserved.

U2 - 10.1016/j.nuclphysbps.2006.08.004

DO - 10.1016/j.nuclphysbps.2006.08.004

M3 - Article

SN - 0920-5632

VL - 161

SP - 15

EP - 20

JO - Nuclear Physics B. Proceedings Supplement

JF - Nuclear Physics B. Proceedings Supplement

ER -

Light-front singularities in the Yukawa model

Abstract

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