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arXiv 0902.3765hep-thgr-qchep-ph
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超重力紫外辐射的研究进展

Progress on Ultraviolet Finiteness of Supergravity

Z. Bern, J. J. M. Carrasco, H. Johansson

摘要:

在这个演讲中,我们总结了最近的计算,指出在四维空间中N = 8的超引力可能是紫外线有限的。我们概述了现代么正性方法,使多循环计算在这个理论,并允许我们利用树级重力和规范理论振幅之间的显着关系。我们还描述了一个链接,观察到的取消在循环水平和改善行为的树级振幅下大复杂变形的动量。

英文摘要:

In this lecture we summarize recent calculations pointing to the possible ultraviolet finiteness of N = 8 supergravity in four dimensions. We outline the modern unitarity method, which enables multiloop calculations in this theory and allows us to exploit a remarkable relation between tree-level gravity and gauge-theory amplitudes. We also describe a link between observed cancellations at loop level and improved behavior of tree-level amplitudes under large complex deformations of momenta.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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