论文标题
量子重新校正对原始波动的量子校正的单位性
Unitarity of quantum-gravitational corrections to primordial fluctuations in the Born-Oppenheimer approach
论文作者
论文摘要
我们重新审查了量子校正量的量子校正对标量和张量扰动的功率光谱的计算，以量子重力的量子剂量。我们专注于理论内部产物的定义以及对宇宙学扰动动力学的校正的单位性的定义问题。我们认为，只要以适当的方式定义内部产品，校正项是统一的，这可能与量规变量的量概念以及量子宇宙学中条件概率的使用有关。我们将本框架内获得的更正与文献中的早期结果进行了比较，并以关于校正术语的物理解释的一些评论得出结论。
We revisit the calculation of quantum-gravitational corrections to the power spectra of scalar and tensor perturbations in the Born-Oppenheimer approach to quantum gravity. We focus on the issue of the definition of the inner product of the theory and the unitarity of the corrections to the dynamics of the cosmological perturbations. We argue that the correction terms are unitary, provided the inner product is defined in a suitable way, which can be related to a notion of gauge-fixing the time variable and the use of conditional probabilities in quantum cosmology. We compare the corrections obtained within this framework to earlier results in the literature and we conclude with some remarks on the physical interpretation of the correction terms.
