TY - JOUR
T1 - Current algebra theorems for the U(1) "Goldstone boson"
AU - Witten, E.
N1 - Funding Information:
t Research supported in part by the National Science Foundations under grant no. PHY77-22864, and the Harvard Society of Fellows.
PY - 1979/9/3
Y1 - 1979/9/3
N2 - 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.
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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U2 - 10.1016/0550-3213(79)90031-2
DO - 10.1016/0550-3213(79)90031-2
M3 - Article
AN - SCOPUS:33749557026
SN - 0550-3213
VL - 156
SP - 269
EP - 283
JO - Nuclear Physics, Section B
JF - Nuclear Physics, Section B
IS - 2
ER -