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arXiv 1001.4458hep-th
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外尔横向引力(WTDiff)与宇宙学常数

Weyl transverse gravity (WTDiff) and the cosmological constant

Enrique Álvarez, Roberto Vidal

摘要:

介绍了尺度不变(横向)引力理论。它们在纯度量重标度下是不变的(即物质场在这些重标度下是惰性的)。这种对称性禁止了宇宙学常数的存在。这些理论不是不变的下的完整的一套同构,但只有相对于那些本地的特点是,他们的发电机是横向$\pd_\a ξ^\a=0$。

英文摘要:

Scale invariant (transverse) gravitational theories are introduced. They are invariant under pure metric rescalings (i.e. the matter fields are inert under those). This symmetry forbids the presence of a cosmological constant. Those theories are not invariant under the full set of diffeomorphisms, but only with respect to those locally characterized by the fact that their generator is transverse $\pd_\a ξ^\a=0$.

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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