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arXiv 2005.12866hep-thgr-qcquant-ph
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Schwinger效应中的背景磁场和量子关联

Background magnetic field and quantum correlations in the Schwinger effect

Sourav Bhattacharya, Shankhadeep Chakrabortty, Hironori Hoshino, Shagun Kaushal

摘要:

在这项工作中,我们考虑了两个复杂的标量场区分其质量耦合到恒定的背景电场和磁场中的$(3+1)$维闵可夫斯基时空和随后调查的一些措施量化之间的量子关联创建的粒子-反粒子施温格对。由于背景磁场本身不能引起闵可夫斯基真空的衰减,我们在这里的主要动机是研究由于电场和磁场的影响之间的相互作用。我们首先计算单个标量场真空态的纠缠熵。其次,我们考虑了两个标量场系统的几种最大纠缠态,计算了它们的对数负性和互信息。这些结果的定性差异有关的国家的电荷含量的强调。基于这些结果,我们提出了加速系中背景磁场对带电量子场态间纠缠退化的一些可能影响。

英文摘要:

In this work we consider two complex scalar fields distinguished by their masses coupled to constant background electric and magnetic fields in the $(3+1)$-dimensional Minkowski spacetime and subsequently investigate a few measures quantifying the quantum correlations between the created particle-antiparticle Schwinger pairs. Since the background magnetic field itself cannot cause the decay of the Minkowski vacuum, our chief motivation here is to investigate the interplay between the effects due to the electric and magnetic fields. We start by computing the entanglement entropy for the vacuum state of a single scalar field. Second, we consider some maximally entangled states for the two-scalar field system and compute the logarithmic negativity and the mutual information. Qualitative differences of these results pertaining to the charge content of the states are emphasised. Based upon these results, we suggest some possible effects of a background magnetic field on the degradation of entanglement between states in an accelerated frame, for charged quantum fields.

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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