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arXiv 0907.3298hep-th
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非共形引力的共形不变性

Conformal invariance from non-conformal gravity

Krzysztof A. Meissner, Hermann Nicolai

摘要:

我们讨论的条件下,经典共形不变的模型在四维可以产生的非共形(爱因斯坦)引力。作为一个“存在性证明”,这确实是可能的,我们展示了如何从非共形规范N=4超引力作为一个特殊的平坦空间极限导出N = 4超杨米尔斯理论与任何紧凑的规范群G。我们强调的作用,预期的紫外有限性(迄今未知)量子引力的基础理论将不得不在这样一个计划中发挥,以及事实上,基本粒子的质量将不得不通过量子引力效应,模仿标准(平坦空间)紫外发散量子场论的共形异常。

英文摘要:

We discuss the conditions under which classically conformally invariant models in four dimensions can arise out of non-conformal (Einstein) gravity. As an `existence proof' that this is indeed possible we show how to derive N=4 super Yang Mills theory with any compact gauge group G from non-conformal gauged N=4 supergravity as a special flat space limit. We stress the role that the anticipated UV finiteness of the (so far unknown) underlying theory of quantum gravity would have to play in such a scheme, as well as the fact that the masses of elementary particles would have to arise via quantum gravitational effects which mimic the conformal anomalies of standard (flat space) UV divergent quantum field theory.

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