Current algebra theorems for the U(1) "Goldstone boson"

E. Witten

Research output: Contribution to journalArticlepeer-review

1306 Scopus citations

Abstract

The U(1) problem is reconsidered from the point of view of the 1 N expansion. It is argued that various heuristic ideas about the η′ are valid from this point of view. Current algebra theorems, similar to soft π theorems, are derived for the η′. They are valid to lowest order in 1 N.

Original languageEnglish (US)
Pages (from-to)269-283
Number of pages15
JournalNuclear Physics, Section B
Volume156
Issue number2
DOIs
StatePublished - Sep 3 1979
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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