On infrared renormalization of the topological charge

Jun, 1990
23 pages
Published in:
  • Nucl.Phys.B 365 (1991) 312-334
  • Published: 1991
Report number:
  • BUTP-90-4-BERN

Citations per year

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Abstract: (Elsevier)
The perturbative renormalization of the operator G-G in non-abelian gauge theories is reconsidered. We discuss in detail the relation between the fermion and gluon axial vector currents, a μ and K μ , respectively. It is shown that, contrary to common belief, the term ∫ G-G d 4 x in the lagrangian is renormalized due to infrared effects.
  • gauge field theory: SU(N)
  • charge: topological
  • perturbation theory: higher-order
  • renormalization: regularization
  • background field
  • dimension: 4
  • Chern-Simons term
  • dimension: 3
  • infrared problem
  • current: axial-vector