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arXiv 1603.06264hep-th
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具有临界势阶的QED的么正性和真空形变

Unitarity and vacuum deformation in QED with critical potential steps

S. P. Gavrilov, D. M. Gitman, A. A. Shishmarev

摘要:

本文可以被认为是对P.R.D 93,045002(2016)工作的补充,其中开发了一种具有x-电临界势阶的QED非微扰方法。在开始时,我们研究的条件下,在考虑中的QED和外空间是酉等价的。然后我们构造了一个具有真空初始条件的一般密度算子。这样一个算子描述了由x-电临界势阶跃引起的初始真空态的变形。我们构造了变形态到电子和正电子子系统的约化,计算了这些约化中的信息损失。我们说明了一般的考虑,研究两个电容器板之间的量子真空的变形。最后,我们计算了这些约化矩阵的纠缠度量,即冯诺伊曼熵。

英文摘要:

The present article can be considered as a complement to the work P.R.D 93, 045002 (2016) where an nonperturbative approach to QED with x-electric critical potential steps was developed. In the beginning we study conditions when in- and out-spaces of the QED under consideration are unitarily equivalent. Then we construct a general density operator with the vacuum initial condition. Such an operator describes a deformation of the initial vacuum state by x-electric critical potential steps. We construct reductions of the deformed state to electron and positron subsystems, calculating the loss of the information in these reductions. We illustrate the general consideration studying the deformation of the quantum vacuum between two capacitor plates. Finally we calculate the entanglement measures of these reduced matrices as von Neumann entropies.

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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