Trace and dilatation anomalies in gauge theories

John C. Collins, Anthony Duncan, Satish D. Joglekar

Research output: Contribution to journalArticle

480 Scopus citations

Abstract

The form of the anomaly in the trace of the energy-momentum tensor in a general theory of interacting fermions and non-Abelian gauge bosons is dervied. The result is shown to involve precisely those gaugevariant operatos which are known to mix with the naive trace under renormalization. The trace is shown to be soft on the mass shell if and only if the theory is at an eigenvalue of the Callan-Symanzik β function. The dilatation anomaly in the matrix element of θλλ with two electromagnetic currents (to lowest order in electromagnetism, but including all orders of the strong gauge interaction) is derived and shown to be infinitely renormalized in finite orders of strong perturbation theory. This anomaly is then shown to be canonical and given precisely by the lowest-order result provided the strong interactions are summed to all orders before going to the limit of physical space-time dimensions.

Original languageEnglish (US)
Pages (from-to)438-449
Number of pages12
JournalPhysical Review D
Volume16
Issue number2
DOIs
StatePublished - Jan 1 1977

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

Fingerprint Dive into the research topics of 'Trace and dilatation anomalies in gauge theories'. Together they form a unique fingerprint.

Cite this