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.

我们讨论了解决量子引力时间问题的关系策略以及实现该问题的不同方式，特别指出了该问题在量子引力上下文中从根本上讲的新维度，其中时空和几何学被理解为是紧急情况。 。我们具体地实现了我们在张量群场理论形式主义的量子引力背景下提倡的关系策略，从而从量子几何模型中提取了有效的关系宇宙动力学。我们详细分析了新兴的宇宙动力学，重点介绍了相对于先前工作的改进，关系时钟的量子特性对其的贡献，