论文标题
来自量子重力的有效关系宇宙学动力学
Effective relational cosmological dynamics from Quantum Gravity
论文作者
论文摘要
我们讨论了解决量子重力和实施不同方式的时间问题的关系策略，尤其指出了该问题在量子重力上下文中所采用的从根本上说明了时空和几何形状被认为是出现的。我们在量子重力的紧张群体田间理论形式主义的背景下，具体地意识到了我们提倡的关系策略，从而导致从量子几何模型中提取有效的关系宇宙学动力学。我们详细分析了新兴的宇宙学动力学，强调了对先前工作的改进，关系时钟对其的量子特性的贡献以及条件之间的相互作用，以确保整个宇宙学演变的真正的关系动力学以及量子反弹的存在。
We discuss the relational strategy to solve the problem of time in quantum gravity and different ways in which it could be implemented, pointing out in particular the fundamentally new dimension that the problem takes in a quantum gravity context in which spacetime and geometry are understood as emergent. We realize concretely the relational strategy we have advocated in the context of the tensorial group field theory formalism for quantum gravity, leading to the extraction of an effective relational cosmological dynamics from quantum geometric models. We analyze in detail the emergent cosmological dynamics, highlighting the improvements over previous work, the contribution of the quantum properties of the relational clock to it, and the interplay between the conditions ensuring a bona fide relational dynamics throughout the cosmological evolution and the existence of a quantum bounce resolving the classical big bang singularity.
