In this letter, we investigate quantum correlations (quantum discord, concurrence and Bell nonlocality) in an open system (amplitude damping channel) with the Unruh effect under a Schwarzschild space-time. In an amplitude damping (AD) channel, we can discover that the Hawking–Unruh effects and decoherence will influence these quantum correlations. However, quantum correlations always decrease with increasing the AD decoherence strength, irrespective of whether there are Hawking–Unruh effects. The results also indicate that the impact of the AD decoherence on quantum correlations is stronger than that of the Hawking–Unruh effects. Besides, we find that if concurrence is present, Bell nonlocality may disappear. This means that the Bell nonlocal states are a strict subset of the entangled states. Furthermore, the redistributions of quantum correlations are discussed in detail under a Schwarzschild space-time. The results show that the reduced physically accessible quantum correlati...

中文翻译：

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Schwarzschild时空下具有Unruh效应的开放系统中的量子相关性探索

在这封信中，我们研究了在Schwarzschild时空下具有Unruh效应的开放系统（振幅阻尼通道）中的量子相关性（量子不和，并发和Bell非局部性）。在振幅阻尼（AD）通道中，我们可以发现霍金-恩鲁（Hawking-Unruh）效应和退相干将影响这些量子相关性。但是，无论是否存在霍金-温鲁效应，量子相关性总是随着AD消相干强度的增加而降低。结果还表明，AD去相干对量子相关性的影响要强于Hawking-Unruh效应。此外，我们发现如果存在并发，贝尔的非本地性可能会消失。这意味着贝尔非局部状态是纠缠状态的严格子集。此外，在Schwarzschild时空下详细讨论了量子相关性的重新分布。结果表明，减少的物理可及的量子相关性...