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arXiv 1104.2087hep-thastro-ph.COgr-qc
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用$λ\to\infty$计算Horava-Lifshitz引力

Horava-Lifshitz gravity with $λ\to\infty$

A. Emir Gumrukcuoglu, Shinji Mukohyama

摘要:

在Hoglava最近提出的幂次计数可重整化引力理论的框架下,我们研究了极限$λ\to\infty$,它可以说是重整化群流紫外不动点的最自然的候选者.在动力学临界指数为$z=3$的可投影模型中,我们分析了由所谓的“暗物质作为积分常数”驱动的Friedmann-Robertson-Walker背景及其周围的微扰,证明了标量和张量引力子的量子涨落振幅在极限下都是有限的,并且在一定条件下该理论是弱耦合的.

英文摘要:

In the framework of the power-counting renormalizable theory of gravitation, recently proposed by Hořava, we study the limit $λ\to\infty$, which is arguably the most natural candidate for the ultraviolet fixed point of the renormalization group flow. In the projectable version with dynamical critical exponent $z=3$, we analyze the Friedmann-Robertson-Walker background driven by the so-called "dark matter as integration constant" and perturbations around it. We show that amplitudes of quantum fluctuations for both scalar and tensor gravitons remain finite in the limit and that the theory is weakly coupled under a certain condition.

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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