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arXiv 1409.7692hep-thastro-ph.COgr-qchep-ph
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引力子的一致动力学相互作用和导数相互作用

On Consistent Kinetic and Derivative Interactions for Gravitons

Johannes Noller

摘要:

唯一已知的完全没有鬼影且一致的洛伦兹不变引力子(或任何自旋为2的场)动力学项是爱因斯坦-希尔伯特项。在这里,我们提出并研究了一个新的家庭的候选人动力学相互作用及其扩展到衍生相互作用涉及几个自旋2场。这些新的项一般打破了非同态不变性,因此可以导致单个自旋为2的场的5个自由度的传播-类似于无幽灵的大质量引力。我们讨论了在什么情况下这些新的术语可以用来建立健康的有效场论,并在这个过程中建立了“约旦”和“爱因斯坦”框架图片的质量,双和多重引力。

英文摘要:

The only known fully ghost-free and consistent Lorentz-invariant kinetic term for a graviton (or indeed for any spin-2 field) is the Einstein-Hilbert term. Here we propose and investigate a new family of candidate kinetic interactions and their extensions to derivative interactions involving several spin-2 fields. These new terms generically break diffeomorphism invariance(s) and as a result can lead to the propagation of 5 degrees of freedom for a single spin-2 field - analogous to ghost-free Massive Gravity. We discuss under what circumstances these new terms can be used to build healthy effective field theories and in the process establish the `Jordan' and `Einstein' frame pictures for Massive-, Bi- and Multi-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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