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Unilateral Coherence and Coherence Distribution in Curved Spacetime

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Abstract

We study unilateral coherence and coherence distribution in the background of a Schwarzschild black hole. We find that, comparing to the flat spacetime, two types of unilateral coherence corresponding to the measurements on system A and system B, respectively, are asymmetric for any Hawking temperature, and the accessible coherence of system B is bigger than the accessible coherence of system A in curved spacetime. We also find that the local coherence of system B reduces with the increase of Hawking temperature, while the local coherence of system A remains unchanged. Unlike behavior of quantum entanglement in curved spacetime, the remaining coherence (correlated coherence) increases with the increase of finitevalued Hawking temperature.

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Acknowledgments

This work is supported by the Key projects of science research in University of Anhui Province(GrantKJ2020A0695 and the Innovation Project of Excellent Talents Training in Anhui Province(2020zyrc153).

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Authors and Affiliations

  1. Department of Electrical Engineering, Tong ling University, Tong ling, 244000, China

    Rui Bao & Yue Wang

  2. Department of Physics, Liaoning Normal University, Dalian, 116029, China

    Shu-Min Wu

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  1. Rui Bao
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  2. Yue Wang
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  3. Shu-Min Wu
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Correspondence to Shu-Min Wu.

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Bao, R., Wang, Y. & Wu, SM. Unilateral Coherence and Coherence Distribution in Curved Spacetime. Int J Theor Phys 60, 3426–3434 (2021). https://doi.org/10.1007/s10773-021-04918-6

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