熵时间的概念:初步讨论
The Concept of Entropic Time: A Preliminary Discussion
AI总结:
本文基于信息获取提出熵时间概念,论证其不可逆性并符合热力学第二定律,区分于参数时间,并探讨主客观坍缩模型中能量守恒的差异。
摘要:
本文从经典物理和量子物理的角度讨论了熵与信息之间的深层联系。在退相干理论的背景下,探讨了通过纠缠在系统之间传递信息的机制。随后,基于信息获取引入了熵时间的概念,并论证了该过程实际上是不可逆的,且与热力学第二定律以及我们对时间的心理感知相一致。这与参数时间的概念有所区别,参数时间在非相对论量子力学中充当物理状态幺正演化的时间参数。本文还讨论了这些思想在主观和客观坍缩模型中的解释。结果表明,在主观坍缩方案下能量守恒,而在客观坍缩方案下能量通常不守恒。这与后者本质上非幺正,且能量守恒首先源于时间对称性这一事实相一致。
英文摘要:
The deep connection between entropy and information is discussed in terms of both classical and quantum physics. The mechanism of information transfer between systems via entanglement is explored in the context of decoherence theory. The concept of entropic time is then introduced on the basis of information acquisition, which is argued to be effectively irreversible and consistent with both the Second Law of Thermodynamics and our psychological perception of time. This is distinguished from the notion of parametric time, which serves as the temporal parameter for the unitary evolution of a physical state in non-relativistic quantum mechanics. The interpretation of these ideas in terms of both subjective and objective collapse models is also discussed. It is shown that energy is conserved under subjective collapse schemes whereas, in general, under objective collapse it is not. This is consistent with the fact that the latter is inherently non-unitary and that energy conservation arises out of time symmetry in the first place.
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