A MULTILOOP ANALYSIS OF THE ANOMALY CANCELING TERMS IN THE HETEROTIC STRING

被引:8
|
作者
MIZRACHI, L
机构
[1] Institute for Theoretical Physics, University of Bern, CH-3012 Bern
关键词
D O I
10.1016/0550-3213(90)90629-R
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
It is shown that the two-loop parity-violating five-point amplitudes for the emission of an antisymmetric tensor field and four gravitons and/or gauge bosons vanish for the heterotic string. As a result, the anomaly cancelling terms in the effective field-theoretic action in D = 10 are not renormalized by two-loop string effects. This provides an extension of the Adler-Bardeen theorem for string theory. The prospects for further extension to arbitrary genus are also discussed. © 1980.
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页码:209 / 222
页数:14
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