论文标题
通勤性和古典客观性的出现
Commutativity and the emergence of classical objectivity
论文作者
论文摘要
我们研究了系统如何将有关指针状态的相关信息冗余的能力在耦合到多个浴室时受到影响。为此,我们考虑了一个与两个浴室接触的系统:一个 - 称为{\ IT可访问}环境 - 该环境本身会诱导系统状态下的纯粹呼吸机制,并满足要确定经典客观性的条件。我们将其称为{\ IT无法访问}的第二个环境以两种物理相关的方式影响系统。首先,我们考虑一种与哈密顿式通勤的相互作用,描述了系统与可访问浴之间的相互作用。因此,尽管在不同的时间尺度上,它也会引起系统的变化。其次,我们考虑一种热相互作用,该相互作用与系统访问的环境Hamiltonian不上交。虽然前者仍然允许系统将其状态冗余地编码到可访问的环境中,但后者降低了相关性,最终在长期限制下销毁了它们,从而导致建立经典客观性所必需的条件丧失。这阐明了在建立支持经典客观性的条件时,各种系统浴相互作用术语之间的换击性的作用。
We examine how the ability of a system to redundantly proliferate relevant information about its pointer states is affected when it is coupled to multiple baths. To this end, we consider a system in contact with two baths: one -- termed the {\it accessible} environment -- which, on its own, induces a pure dephasing mechanism on the state of the system and satisfies the conditions for classical objectivity to be established. The second environment, which we dub as {\it inaccessible}, affects the system in two physically relevant ways. Firstly, we consider an interaction that commutes with the Hamiltonian describing the interaction between system and accessible bath. It thus also gives rise to dephasing of the system, albeit on different time scales. Secondly, we consider a thermalising interaction, which does not commute with the system-accessible environment Hamiltonian. While the former still allows the system to redundantly encode its state into the accessible environment, the latter degrades the correlations, eventually destroying them in the long-time limit, and thus leads to a loss of the conditions necessary for classical objectivity to be established. This sheds light on the role that commutativity between the various system-bath interaction terms plays when establishing the conditions for classical objectivity to be supported.