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arXiv 1105.1783hep-thastro-ph.COgr-qc
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$Λ_3$理论中的Vainshtein机制

Vainshtein Mechanism In $Λ_3$ - Theories

Giga Chkareuli, David Pirtskhalava

摘要:

我们探索空间的球对称,静态解的解耦极限的一类非线性协变扩展的Fierz-Pauli大质量引力最近在arXiv:1007.0443。在一般情况下,存在几个这样的解决方案与各种渐近极限。我们找到了它们的近似短距离和长距离行为,并使用数值分析在Vainshtein半径$r_*$上匹配它们。我们的研究结果表明,对于一个广泛的参数范围内,该理论确实具有Vainshtein机制,筛选标量贡献的引力在$r_*$。此外,文献中还存在一类解,其$1/r$引力势在Vainshtein标度内是完全屏蔽的.然而,数值分析表明,对于这种类型的解决方案,引力势不衰减在空间无限远。

英文摘要:

We explore the space of spherically symmetric, static solutions in the decoupling limit of a class of non-linear covariant extensions of Fierz-Pauli massive gravity obtained recently in arXiv:1007.0443. In general, several such solutions with various asymptotic limits exist. We find their approximate short and long-distance behaviour and use numerical analysis to match them at the Vainshtein radius, $r_*$. Our findings indicate, that for a broad range of parameters, the theory does possess the Vainshtein mechanism, screening the scalar contribution to the gravitational force within $r_*$. In addition, there exists a class of solutions in the literature, for which the $1/r$ gravitational potential is completely screened within the Vainshtein scale. However, numerical analysis indicates, that for this type of solutions, the gravitational potential does not decay at spatial infinity.

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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