论文标题
量子宇宙学中的时钟和轨迹
Clocks and trajectories in quantum cosmology
论文作者
论文摘要
我们考虑了一个简单的宇宙学模型，该模型由一个空的bianchi i宇宙组成，它的哈密顿量我们将其拆卸以提供自然时钟变量。因此，该模型有效地描述了剪切诱导的时钟的各向同性宇宙。量化该模型，我们获得了各种不同可能的弹跳轨迹（对相干状态的半夸抗预期值或通过de broglie-bohm公式获得的），并明确其时钟依赖性，特别强调了整个弹跳的对称性问题。
We consider a simple cosmological model consisting of an empty Bianchi I Universe, whose Hamiltonian we deparametrise to provide a natural clock variable. The model thus effectively describes an isotropic universe with an induced clock given by the shear. Quantising this model, we obtain various different possible bouncing trajectories (semiquantum expectation values on coherent states or obtained by the de Broglie-Bohm formulation) and explicit their clock dependence, specifically emphasising the question of symmetry across the bounce.
