Stability analysis for new theories of massive spin-two particle and black hole entropy of new bigravity
Stability analysis for new theories of massive spin-two particle and black hole entropy of new bigravity
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大质量自旋二粒子与新重引力黑洞熵新理论的稳定性分析
DOI：
10.1103/physrevd.92.023011
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
and S. Nojiri
中科院分区：
文献类型：
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作者：
Y. Ohara;S. Akagi;and S. Nojiri
(理论物理。Rev. D . 90, 043006(2014)]，我们提出了一个新的无鬼质量自旋-二模型。此外，作为一种扩展，我们将新模型与非动态曲线背景耦合在一起。Rev. D 90, 123013(2014)]，在不出现额外模式的情况下构建了新的交互项。新模型的特征是存在非线性位势项，这些位势项给出了非平凡真空。然而，非平凡真空的存在并不意味着粒子可以在所有真空周围被定义。因此，本文讨论了新模型在平坦时空和弯曲时空中具有稳定真空的条件。然后，我们将该自旋-二理论与动力学背景耦合，得到了解。此外，我们通过计算黑洞熵来研究这个新的自旋- 2模型对爱因斯坦引力的影响，因为引力与大质量自旋- 2理论耦合除了（反）de Sitter空间解外，还承认一个黑洞解。
In [Phys. Rev. D 90, 043006 (2014)], we proposed a new ghost-free massive spin-two model in flat spacetime. Furthermore, as some extension, we coupled the new model with a nondynamical curved background in [Phys. Rev. D 90, 123013 (2014)] and constructed new interaction terms without the appearance of an extra mode. The characteristic property of the new model is the existence of nonlinear potential terms which give the nontrivial vacua. The presence of the nontrivial vacua, however, does not mean that the particle can be defined around all vacua. Therefore, in this paper, we discuss the conditions for the new model to have stable vacua in flat spacetime and curved spacetime. Then, we couple this spin-two theory with a dynamical background and obtain the solutions. Moreover, we investigate the effect of this new spin-two model on the Einstein gravity by calculating the black hole entropy, since the gravity coupled with massive spin-two theory admits a black hole solution in addition to the (anti-)de Sitter space solution.