U(1) WITHOUT INSTANTONS

被引:1181
作者
VENEZIANO, G
机构
[1] CERN, Geneva
关键词
D O I
10.1016/0550-3213(79)90332-8
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
Witten's recent proposal that the U(1) problem might be solved in 1/N expanded QCD, is shown to be automatically consistent with expected θ dependences and anomalous Ward identities, if a (modified) Kogut-Susskind mechanism is used. Ward identities are algebraically saturated for large N. A sort of partial conservation of the U(1) current" is found to hold for the "η" field. © 1979."
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页码:213 / 224
页数:12
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