Brane-induced gravity in more than one extra dimension: Violation of equivalence principle and ghost
Brane-induced gravity in more than one extra dimension: Violation of equivalence principle and ghost
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超过一维的膜诱导引力：违反等效原理和幽灵
DOI：
10.1103/physrevd.67.104014
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发表时间：
2002
影响因子：
5
通讯作者：
V. Rubakov
中科院分区：
文献类型：
--
作者：
S. Dubovsky;V. Rubakov
我们考虑一个膜诱导引力模型在一个以上的额外的维度，正则化的假设，体重力在紫外线是软的。我们研究关于平坦多维时空和平坦膜的线性理论。我们首先发现，这个模型允许违反膜物质的引力和惯性质量之间的等价性。然后，我们观察到，该模型有一个标量鬼场附近的膜，以及准定域的大质量引力子。在中等距离的膜上四维引力的纯张量结构是由于大质量引力子的额外极化和鬼之间的抵消。这完全类似于GRS模型中的情况。
We consider a brane-induced gravity model in more than one extra dimension, regularized by assuming that the bulk gravity is soft in the ultraviolet. We study linear theory about a flat multidimensional space-time and a flat brane. We first find that this model allows for the violation of equivalence between the gravitational and inertial masses of brane matter. We then observe that the model has a scalar ghost field localized near the brane, as well as a quasilocalized massive graviton. The pure tensor structure of four-dimensional gravity on the brane at intermediate distances is due to the cancellation between the extra polarization of the massive graviton and the ghost. This is completely analogous to the situation in the GRS model.