A new prescription for the spurious poles in a light-cone gauge using gauge invariance

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1 Citation (Scopus)

Abstract

A light-cone gauge simplifies the calculation by eliminating many Feynman diagrams at the expense of introducing spurious poles in loop integrals. A new prescription for the spurious poles in a light-cone gauge is introduced. The prescription employs only gauge invariance in identifying the sign of the iε appearing in the spurious poles. Thus, the spurious poles can be determined by calculating a subset of the diagrams in the Feynman gauge.

Original languageEnglish
JournalJournal of the Korean Physical Society
Volume47
Issue number2
Publication statusPublished - 2005 Aug 1

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gauge invariance
cones
poles
Feynman diagrams
set theory
diagrams

Keywords

  • Fragmentation
  • Fragmentation function
  • Light-cone gauge
  • Next-to-leading order
  • Quarkonium

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

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title = "A new prescription for the spurious poles in a light-cone gauge using gauge invariance",
abstract = "A light-cone gauge simplifies the calculation by eliminating many Feynman diagrams at the expense of introducing spurious poles in loop integrals. A new prescription for the spurious poles in a light-cone gauge is introduced. The prescription employs only gauge invariance in identifying the sign of the iε appearing in the spurious poles. Thus, the spurious poles can be determined by calculating a subset of the diagrams in the Feynman gauge.",
keywords = "Fragmentation, Fragmentation function, Light-cone gauge, Next-to-leading order, Quarkonium",
author = "Jungil Lee",
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language = "English",
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journal = "Journal of the Korean Physical Society",
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KW - Fragmentation

KW - Fragmentation function

KW - Light-cone gauge

KW - Next-to-leading order

KW - Quarkonium

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