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arXiv 1408.0487hep-thgr-qc
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双耦合物质双引力中Boulware-Deser鬼的出现

Appearance of Boulware-Deser ghost in bigravity with doubly coupled matter

Yasuho Yamashita, Antonio De Felice, Takahiro Tanaka

摘要:

我们讨论的情况下,当我们添加物质耦合到两个度量的幽灵免费的双引力。在本文中,我们表明,Boulware-Deser鬼一般复活的存在下,双重耦合的物质和鬼自由强烈限制动力学双重耦合的物质模型。这一结果可能预示着,从一个适用于高能的模型开始,将无幽灵的双引力理论作为一个低能有效理论推导出来的尝试会遇到困难。

英文摘要:

We discuss the ghost freeness in the case when we add matter coupled to two metrics to the ghost-free bigravity. In this paper we show that the Boulware-Deser ghost generally revives in the presence of doubly coupled matter and that ghost freeness strongly restricts the model of kinetically doubly coupled matter. This result may anticipate difficulties in the attempt to derive the ghost-free bigravity as a low-energy effective theory, starting with a model applicable at high energies.

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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