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arXiv 1905.09463gr-qchep-th
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论暗能量与量子引力

On Dark Energy and Quantum Gravity

Per Berglund, Tristan Hubsch, Djordje Minic

摘要:

在量子引力中实现暗能量和观察到的德西特时空已经被证明在大多数常规方法中受到阻碍。我们认为,弦论中的左和右运动者的额外自由度以及由此产生的加倍的、非对易的广义几何公式可以导致与德西特时空一致的暗能量的有效模型。在这种方法中,正则共轭对偶空间的曲率提供了暗能量,在观测到的时空中诱导一个正的宇宙学常数,而上述对偶空间的大小是在同一观测到的德西特时空中的引力常量。由于弦论将短距离与长距离联系起来的独特特征,宇宙学常数尺度、普朗克尺度和有效TeV大小的粒子物理尺度必须满足一个类似跷跷板的公式-这正是某些弦宇宙膜类型模型的一般预测。

英文摘要:

Realizing dark energy and the observed de Sitter spacetime in quantum gravity has proven to be obstructed in most every usual approach. We argue that additional degrees of freedom of the left- and right-movers in string theory and a resulting doubled, non-commutatively generalized geometric formulation thereof can lead to an effective model of dark energy consistent with de Sitter spacetime. In this approach, the curvature of the canonically conjugate dual space provides for the dark energy inducing a positive cosmological constant in the observed spacetime, whereas the size of the above dual space is the gravitational constant in the same observed de Sitter spacetime. As a hallmark relation owing to a unique feature of string theory which relates short distances to long distances, the cosmological constant scale, the Planck scale, and the effective TeV-sized particle physics scale must satisfy a see-saw-like formula---precisely the generic prediction of certain stringy cosmic brane type models.

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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