标题： 量子宇宙学引力波？ 显示英文标题

标题： Quantum cosmological gravitational waves?

摘要： 广义相对论及其宇宙学解预测了在我们弗里德曼-勒梅特-罗伯逊-沃尔克膨胀宇宙之上的扰动张量模式的存在。 由于它们是规范不变的，并且不一定与其他量子源耦合，因此可以将其视为纯粹的引力。 明确地证明它们确实需要被量子化，将提供引力量子性质的无可置疑的证据。 本综述将介绍可能导致这一结论的各种理论问题的总结。 显示英文摘要

摘要： General relativity and its cosmological solution predicts the existence of tensor modes of perturbations evolving on top of our Friedman-Lema\^itre-Robertson-Walker expanding Universe. Being gauge invariant and not necessarily coupled to other quantum sources, they can be seen as representing pure gravity. Unambiguously showing they are indeed to be quantised would thus provide an unquestionable proof of the quantum nature of gravitation. This review will present a summary of the various theoretical issues that could lead to this conclusion.