论文标题
量子重力和重力波天文学
Quantum gravity and gravitational-wave astronomy
论文作者
论文摘要
我们回顾了与重力波（GWS）有关的量子重力现象学的当前状态。可以从两个方向（一个与模型无关的一个方向）接触该主题。在第一种情况下，我们在量子引力理论中嵌入了最突出的宇宙学模型之一，而在第二种情况下，我们指出了量子重力中发现的某些常见特征。三个宇宙GW可观察物可能会受到扰动和非扰动量子 - 重力效应的影响：随机GW背景，GWS的传播速度和GW源的光度距离。虽然许多量子重力模型不会产生任何可观察到的信号，但有些模型预测蓝倾斜的随机背景或修改的光度距离，这两者都可以通过未来的GW干涉仪检测到。我们得出的结论是，用GW观测值测试量子重力是很困难的，但仍然有可能。
We review the present status of quantum-gravity phenomenology in relation to gravitational waves (GWs). The topic can be approached from two direction, a model-dependent one and a model-independent one. In the first case, we introduce some among the most prominent cosmological models embedded in theories of quantum gravity, while in the second case we point out certain common features one finds in quantum gravity. Three cosmological GW observables can be affected by perturbative as well as non-perturbative quantum-gravity effects: the stochastic GW background, the propagation speed of GWs and the luminosity distance of GW sources. While many quantum-gravity models do not give rise to any observable signal, some predict a blue-tilted stochastic background or a modified luminosity distance, both detectable by future GW interferometers. We conclude that it is difficult, but still possible, to test quantum gravity with GW observations.
