Keldysh formalism for multiple parallel worlds

Keldysh formalism for multiple parallel worlds
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多个平行世界的凯尔迪什形式主义

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发表时间:
2015
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通讯作者:
Y. Nazarov
Y. Nazarov
中科院分区:
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文献类型:
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作者:
M. Ansari;Y. Nazarov

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我们对最近开发的多个平行世界的凯尔迪什形式主义进行了紧凑且独立的回顾。该形式主义已应用于信息量流的一致量子评估,特别是 Renyi 和 Shannon 熵流的评估。我们首先以方便演示的形式在单一世界中制定标准和扩展的凯尔迪什技术。我们解释了包含多个平行世界的凯尔迪什轮廓的使用。最后,我们简要总结了该方法获得的具体结果。
We present a compact and self-contained review of the recently developed Keldysh formalism for multiple parallel worlds. The formalism has been applied to consistent quantum evaluation of the flows of informational quantities, in particular, to the evaluation of Renyi and Shannon entropy flows. We start with the formulation of the standard and extended Keldysh techniques in a single world in a form convenient for our presentation. We explain the use of Keldysh contours encompassing multiple parallel worlds. In the end, we briefly summarize the concrete results obtained with the method.