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arXiv 1209.0416hep-th
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“诱导”N=4共形超引力

"Induced" N=4 conformal supergravity

I. L. Buchbinder, N. G. Pletnev, A. A. Tseytlin

摘要:

本文考虑耦合到背景N=4共形超引力场的阿贝尔N=4超杨-米尔斯理论。在经典水平上,这种耦合在复(“介子-轴子”)超引力标量的整体SU(1,1)变换下是不变的,并结合了壳层上的矢量-矢量对偶。通过对超杨-米尔斯场积分,计算了相应量子有效作用量的发散部分,并证明了其SU(1,1)不变性.与共形异常有关的发散部分是单圈精确的,应该由包含Weyl张量平方项的N=4共形超引力作用量给出。这使我们能够确定具有明显SU(1,1)不变性的N=4共形超引力作用量的玻色子部分的完全非线性形式。

英文摘要:

We consider an abelian N=4 super Yang-Mills theory coupled to background N=4 conformal supergravity fields. At the classical level, this coupling is invariant under global SU(1,1) transformation of the complex ("dilaton-axion") supergravity scalar combined with an on-shell vector-vector duality. We compute the divergent part of the corresponding quantum effective action found by integrating over the super Yang-Mills fields and demonstrate its SU(1,1) invariance. This divergent part related to the conformal anomaly is one-loop exact and should be given by the N=4 conformal supergravity action containing the Weyl tensor squared term. This allows us to determine the full non-linear form of the bosonic part of the N=4 conformal supergravity action which has manifest SU(1,1) invariance.

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