Probing Planckian physics in de Sitter space with quantum correlations
文献类型：期刊论文
| 作者 | Feng, J ; Zhang, YZ ; Gould, MD ; Fan, H ; Sun, CY ; Yang, WL |
| 刊名 | ANNALS OF PHYSICS
 |
| 出版日期 | 2014 |
| 卷号 | 351页码:872 |
| 关键词 | De Sitter space alpha-vacua Quantum entanglement Quantum communication channel Classical and quantum capacity |
| ISSN号 | 0003-4916 |
| 通讯作者 | Feng, J (reprint author), Univ Queensland, Sch Math & Phys, Brisbane, Qld 4072, Australia. |
| 中文摘要 | We study the quantum correlation and quantum communication channel of both free scalar and fermionic fields in de Sitter space, while the Planckian modification presented by the choice of a particular alpha-vacuum has been considered. We show the occurrence of degradation of quantum entanglement between field modes for an inertial observer in curved space, due to the radiation associated with its cosmological horizon. Comparing with standard Bunch-Davies choice, the possible Planckian physics causes some extra decrement on the quantum correlation, which may provide the means to detect quantum gravitational effects via quantum information methodology in future. Beyond single-mode approximation, we construct proper Unruh modes admitting general alpha-vacua, and find a convergent feature of both bosonic and fermionic entanglements. In particular, we show that the convergent points of fermionic entanglement negativity are dependent on the choice of alpha. Moreover, an one-to-one correspondence between convergent points H-c of negativity and zeros of quantum capacity of quantum channels in de Sitter space has been proved. (C) 2014 Elsevier Inc. All rights reserved. |
| 资助信息 | Australian Research Council [DP110103434]; NSFC [11075126, 11031005, 11147017, 2010CB922904] |
| 语种 | 英语 |
| 公开日期 | 2015-04-14 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/58857]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Feng, J,Zhang, YZ,Gould, MD,et al. Probing Planckian physics in de Sitter space with quantum correlations[J]. ANNALS OF PHYSICS,2014,351:872. |
| APA | Feng, J,Zhang, YZ,Gould, MD,Fan, H,Sun, CY,&Yang, WL.(2014).Probing Planckian physics in de Sitter space with quantum correlations.ANNALS OF PHYSICS,351,872. |
| MLA | Feng, J,et al."Probing Planckian physics in de Sitter space with quantum correlations".ANNALS OF PHYSICS 351(2014):872. |
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来源：物理研究所
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