发表机构
Universidad Complutense de Madrid; Universidad de Zaragoza（马德里康普顿斯大学; 萨拉戈萨大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本研究分析含时电场中带电标量场真空态的关联，发现电场增强总关联但减少可蒸馏纠缠，并引入方向依赖性。
AI 中文摘要
我们通过构造两个不相交区域中的局域可观测量，分析了带电标量场真空态的关联。我们考虑一个含时均匀电场，并将其与施温格效应中的粒子-反粒子产生相联系，从而研究关联的时间演化。我们的结果表明，电场增加了态的混合度并增强了总关联，而区域间的可蒸馏纠缠则减少，在非微扰对产生机制下，对于足够强的脉冲，纠缠在有限时间内消失。我们还讨论了由外部背景引起的各向异性效应，表明关联的分布获得了非平凡的方向依赖性。
英文摘要
We analyze the correlations of the vacuum state of a charged scalar field by constructing localized observables in two disjoint regions. We consider a time-dependent homogeneous electric field and examine the time evolution of correlations by relating it with the particle-antiparticle creation through the Schwinger effect. Our results show that the electric field increases the mixedness of the states and enhances total correlations, while the distillable entanglement among the regions decreases, vanishing at a finite time for sufficiently intense pulses within the non-perturbative pair-production regime. We also discuss the effect of anisotropy induced by the external background, showing that the distribution of correlations acquires a nontrivial directional dependence.
Comments12 pages, 5 figures
