Anomalies, Ambiguities and Superstrings
Anomalies, Ambiguities and Superstrings
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DOI：
10.1016/0370-2693(86)90544-7
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发表时间：
1986-01
影响因子：
4.4
通讯作者：
C. Hull
中科院分区：
文献类型：
--
作者：
C. Hull
结果表明，如果将协变项添加到仪表连接中，异常只会发生微小的变化。因此，对于超弦，如果反对称张量场强 H 通过任何自旋连接的 Chern-Simons 形式（可能带有扭转）进行修改，则可以消除异常。因此，低能有效场论并不是通过异常消除和超对称性来唯一确定的。考虑了字符串压缩的影响。
It is shown that anomalies only change trivially if a covariant term is added to the gauge connection. As a result, for the superstring, the anomalies can be cancelled if the anti-symmetric tensor field strength H is modified by the Chern-Simons form of any spin-connection, possibly with torsion. The low-energy effective field theory is, then, not uniquely determined by requiring anomaly cancellation and supersymmetry. Implications for string compactifications are considered.