On the Debate Concerning the Proper Characterization of Quantum Dynamical Evolution
On the Debate Concerning the Proper Characterization of Quantum Dynamical Evolution
复制标题
关于量子动力学演化的正确表征的争论
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
W. Myrvold
中科院分区：
文献类型：
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作者：
Michael E. Cuffaro;W. Myrvold
关于量子系统的动力学框架是否应该在完全正（CP）映射之外加入不完全正（NCP）映射，物理学家之间存在着长期的，有时甚至是激烈的争论。尽管合理的参数完全积极性，我们认为，NCP地图应该被允许，与资格：这些应该被理解，而不是反映“不完全积极的”演变，但作为线性扩展，一个系统的整个状态空间，CP地图，只有部分定义。超出域的部分CP映射的定义，我们认为，可能会允许。
There has been a long-standing and sometimes passionate debate between physicists over whether a dynamical framework for quantum systems should incorporate not completely positive (NCP) maps in addition to completely positive (CP) maps. Despite the reasonableness of the arguments for complete positivity, we argue that NCP maps should be allowed, with a qualification: these should be understood, not as reflecting ‘not completely positive’ evolution, but as linear extensions, to a system’s entire state space, of CP maps that are only partially defined. Beyond the domain of definition of a partial-CP map, we argue, much may be permitted.