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

E. Witten

doi:10.1016/0550-3213(79)90031-2

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

E. Witten

Research output: Contribution to journal › Article › peer-review

1323 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 language	English (US)
Pages (from-to)	269-283
Number of pages	15
Journal	Nuclear Physics, Section B
Volume	156
Issue number	2
DOIs	https://doi.org/10.1016/0550-3213(79)90031-2
State	Published - Sep 3 1979
Externally published	Yes

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

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10.1016/0550-3213(79)90031-2

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title = "Current algebra theorems for the U(1) {"}Goldstone boson{"}",

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.",

author = "E. Witten",

note = "Funding Information: t Research supported in part by the National Science Foundations under grant no. PHY77-22864, and the Harvard Society of Fellows.",

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AB - 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.

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

Abstract

All Science Journal Classification (ASJC) codes

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