论文标题
宇宙反射的规范描述
Canonical description of cosmological backreaction
论文作者
论文摘要
准经典动力学的规范方法使宇宙学扰动的严格背景近似是可能的，包括独立领域，例如相关的自由度。在此处引入和分析了新模型，以在背景和扰动之间存在量子相关性的情况下以及量子场不同模式之间的互相关。扰动状态矩的进化方程揭示了不均匀性从初始真空中积累的条件。至关重要的作用是通过量子非本地性扮演的，由规范方法作为等效的局部理论提出，具有非经典自由度，由量子状态的矩给出。
Canonical methods of quasiclassical dynamics make it possible to go beyond a strict background approximation for cosmological perturbations by including independent fields such as correlation degrees of freedom. New models are introduced and analyzed here for cosmological dynamics in the presence of quantum correlations between background and perturbations, as well as cross-correlations between different modes of a quantum field. Evolution equations for moments of a perturbation state reveal conditions required for inhomogeneity to build up out of an initial vacuum. A crucial role is played by quantum non-locality, formulated by canonical methods as an equivalent local theory with non-classical degrees of freedom given by moments of a quantum state.
