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arXiv 2403.01419quant-phmath-phmath.MP
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来自冯·诺依曼型相互作用哈密顿量的谱广播结构

Spectrum Broadcast Structures from von Neumann type interaction Hamiltonians

Alberto Acevedo, Janek Wehr, Jarek Korbicz

AI总结:

针对中心系统与N个环境经冯·诺依曼型测量相互作用的场景,本文证明了谱广播结构动态涌现的新充分条件,以Gram-Schmidt正交化替代Knill-Barnum误差估计。

摘要:

在本文中,我们为最近建立的谱广播结构(SBS)理论的数学基础作出贡献。SBS是多体量子态,编码了一种操作性的客观性概念,并展现出一种更高级形式的退相干。我们研究中心系统通过冯·诺依曼型测量相互作用与N个环境相互作用情形下的SBS,这种相互作用在开放量子系统理论中普遍存在。我们陈述并证明了有限维系统中SBS动态产生的一个新的充分条件。该条件基于Gram-Schmidt正交化,而非此前使用的Knill-Barnum误差估计。

英文摘要:

In this paper, we contribute to the mathematical foundations of the recently established theory of Spectrum Broadcast Structures (SBS). These are multipartite quantum states, encoding an operational notion of objectivity and exhibiting a more advanced form of decoherence. We study SBS in the case of a central system interacting with N environments via the von Neumann-type measurement interactions, ubiquitous in the theory of open quantum systems. We state and prove a novel sufficient condition for SBS to arise dynamically for finite-dimensional systems. The condition is based on the Gram-Schmidt orthogonalization rather than on the Knill-Barnum error estimation used before.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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