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arXiv 1302.4447hep-thastro-ph.GAgr-qchep-ph
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弱质量引力

Weak Massive Gravity

Denis Comelli, Fabrizio Nesti, Luigi Pilo

摘要:

我们发现了一类新的理论,大质量引力与五个传播自由度,只有旋转被保存。我们的结果是基于一个非微扰和背景独立的哈密顿分析。在这些理论中,弱场近似表现良好,静态引力势在大距离处通常被汤川屏蔽,而在短距离处没有发现vDVZ不连续,并且不需要依赖非线性效应来通过太阳系测试。有效场论分析表明,紫外截止为(mMPL)^1/2 ~ 1/μm,这是可能的最高值。因此,这些理论可以在所有唯象感兴趣的尺度上在弱场机制中进行研究,并且是可计算的大距离修正引力的候选者。

英文摘要:

We find a new class of theories of massive gravity with five propagating degrees of freedom where only rotations are preserved. Our results are based on a non-perturbative and background-independent Hamiltonian analysis. In these theories the weak field approximation is well behaved and the static gravitational potential is typically screened à la Yukawa at large distances, while at short distances no vDVZ discontinuity is found and there is no need to rely on nonlinear effects to pass the solar system tests. The effective field theory analysis shows that the ultraviolet cutoff is (m M_PL)^1/2 ~ 1/μm, the highest possible. Thus, these theories can be studied in weak-field regime at all the phenomenologically interesting scales, and are candidates for a calculable large-distance modified gravity.

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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