论文标题
来自纠缠混合状态的新兴动态
Emergent dynamics from entangled mixed states
论文作者
论文摘要
纠缠是量子物理学的核心，在涉及复合系统的量子现象中起着核心作用。根据量子动力学的永恒图片，纠缠对于理解动力学进化和时间流的起源也可能是必不可少的。在这个角度，宇宙被视为一个由全球固定状态共同描述的时钟$ c $和系统$ r $（或“宇宙的其余部分”）组成的二项式实体，$ r $的动态演化被认为是$ C $和$ c $之间的近距离现象。尽管最近做出了重大努力，但这种方法的许多方面仍未开发，尤其是涉及混合国家的方法。在目前的贡献中，我们调查了时钟系统复合材料混合状态的量子动力学的永恒图片，重点是定量关系，将时钟系统纠缠与系统所经历的新兴动力学进化联系起来。
Entanglement is at the core of quantum physics, playing a central role in quantum phenomena involving composite systems. According to the timeless picture of quantum dynamics, entanglement may also be essential for understanding the very origins of dynamical evolution and the flow of time. Within this point of view, the Universe is regarded as a bipartite entity comprising a clock $C$ and a system $R$ (or "rest of the Universe") jointly described by a global stationary state, and the dynamical evolution of $R$ is construed as an emergent phenomena arising from the entanglement between $C$ and $R$. In spite of substantial recent efforts, many aspects of this approach remain unexplored, particularly those involving mixed states. In the present contribution we investigate the timeless picture of quantum dynamics for mixed states of the clock-system composite, focusing on quantitative relations linking the clock-system entanglement with the emerging dynamical evolution experienced by the system.
