CORRELATION-FUNCTIONS FROM 2-DIMENSIONAL STRING WARD IDENTITIES

被引：10
|
作者：
KLEBANOV, IR
PASQUINUCCI, A
机构：
[1] Joseph Henry Laboratories, Department of Physics, Princeton University, Princeton
来源：
NUCLEAR PHYSICS B | 1993年 / 393卷 / 1-2期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1016/0550-3213(93)90245-K
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：
We rederive the w. Ward identities, starting from the existence of trivial linearized gauge invariances, and using the method of canceled propagators in the operator formalism. Recursion relations for certain classes of correlation functions are derived, and these correlation functions are calculated exactly. We clarify the relation of these results with another derivation of the Ward identities, which relies directly on charge conservation. We also emphasize the importance of the kinematics of canceled propagators in ensuring that the Ward identities are non-trivial. Finally, we sketch an extension of Ward identities to open strings.
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页码：261 / 279
页数：19
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