Probing screening and the graviton mass with gravitational waves
Probing screening and the graviton mass with gravitational waves
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DOI：
10.1088/1361-6382/aafce6
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发表时间：
2018-11
影响因子：
3.5
通讯作者：
S. Perkins;N. Yunes
中科院分区：
文献类型：
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作者：
S. Perkins;N. Yunes
引力波可以探测基本物理，导致对引力子质量的新限制。然而，以前的测试忽略了屏蔽的影响，这通常存在于预测引力子质量非零的修正理论中。我们在这里研究当考虑屏蔽效应时，未来的引力波观测是否能够约束引力子的质量。我们首先考虑由屏蔽的质量引力子效应引起的引力波传播与模型无关的修正。我们发现，未来的观测可以分别限制-MPC和-EV的屏蔽半径和引力子质量。我们还考虑了两个特定理论中的屏蔽效应，无鬼引力和重引力，这两个理论可能没有实现这些类型的传播修正，但它们确实提供了与我们的分析相关的屏蔽参数的解析表达式，从而允许更具体的结果。然而，我们能够施加的限制很小。其原因是，第二代和第三代探测器对引力子质量很敏感，在这些特定的模型中，引力子质量导致非常小的屏蔽半径。然而，筛选的效果可能会变得重要，因为在不久的将来，通过叠加多个观测数据，可以改善对引力子质量的限制。
Gravitational waves can probe fundamental physics, leading to new constraints on the mass of the graviton. Previous tests, however, have neglected the effect of screening, which is typically present in modified theories that predict a non-zero graviton mass. We here study whether future gravitational wave observations can constrain the graviton mass when screening effects are taken into account. We first consider model-independent corrections to the propagation of gravitational waves due to screened massive graviton effects. We find that future observation can place constraints on the screening radius and the graviton mass of – Mpc and – eV respectively. We also consider screening effects in two specific theories, ghost-free massive gravity and bigravity, that might not realize these types of propagation modifications, but that do provide analytic expressions for screening parameters relevant to our analysis allowing for more concrete results. However, the constraints we are able to place are small. The reason for this is that second- and third-generation detectors are sensitive to graviton masses that lead to very small screening radii in these particular models. The effect of screening, however, can become important as constraints on the graviton mass are improved through the stacking of multiple observations in the near future.