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arXiv 1206.2648hep-thgr-qc
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迈向有限量子超引力

Towards a finite quantum supergravity

Leonardo Modesto

摘要:

在本文中,我们研究了一个N=1的超对称扩展的扰动super-renormalizable(非局部)理论的引力在四维。非定域超引力理论在与定域N=1超引力相同的粒子含量下是幂次超重整化的和树级幺正的(作为简单例子,证明了三维N=1和N=2超引力的幺正性)。我们相信扩展的SO(N)超引力,当N=4或N=8时,在一个圈上也可能没有发散。因此,在环展开中,扩展的超引力在任何阶都是有限的。

英文摘要:

In this paper we study an N=1 supersymmetric extension of a perturbatively super-renormalizable (nonlocal)theory of gravity in four dimensions. The nonlocal supergravity theory is power-counting super-renormalizable and tree level unitary with the same particle content of the local N=1 supergravity (as simple example, unitarity of the three dimensional N=1 and N=2 supergravity is proved). We believe that extended SO(N) supergravity, for N=4 or N=8, might be free from divergences also at one loop. The extended supergravities would then result finite at any order in the loop expansion.

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