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arXiv 1402.7152quant-ph
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非惯性系中Dirac场和标量场的非最大三体纠缠退化

Non-maximal Tripartite Entanglement Degradation of Dirac and Scalar fields in Non-inertial frames

Salman Khan, Niaz Ali Khan, M. K. Khan

摘要:

利用π纠缠研究了加速标架中Dirac场和标量场的非极大三分态的纠缠行为。对于Dirac场,在相同的初始纠缠下,通过互换概率幅值,加速观察者的单纠缠和π纠缠随加速的退化程度是不同的。对于任何加速度和初始纠缠度的选择,一缠结和π缠结的一小部分总是存活。对于标量场,加速度观测者的单纠缠依赖于概率幅值的选择,并且在无限加速度范围内它为零,而对于π-纠缠,这并不总是成立.π-缠结对概率幅的依赖性随加速度而变化。在较低的加速度范围内,其行为通过在概率幅值之间切换而改变,并且对于较大的加速度值,这种对概率幅的依赖性消失。有趣的是,与二体纠缠不同,在标量场中,π纠缠随加速度的退化比狄拉克场慢。

英文摘要:

The π-tangle is used to study the behavior of entanglement of a nonmaximal tripartite state of both Dirac and scalar fields in accelerated frame. For Dirac fields, the degree of degradation with acceleration of both one-tangle of accelerated observer and π-tangle, for the same initial entanglement, is different by just interchanging the values of probability amplitudes. A fraction of both one-tangles and the π-tangle always survives for any choice of acceleration and the degree of initial entanglement. For scalar field, the one-tangle of accelerated observer depends on the choice of values of probability amplitudes and it vanishes in the range of infinite acceleration, whereas for π-tangle this is not always true. The dependence of π-tangle on probability amplitudes varies with acceleration. In the lower range of acceleration, its behavior changes by switching between the values of probability amplitudes and for larger values of acceleration this dependence on probability amplitudes vanishes. Interestingly, unlike bipartite entanglement, the degradation of π-tangle against acceleration in the case of scalar fields is slower than for Dirac 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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