Probing Planckian physics in de Sitter space with quantum correlations

doi:10.1016/j.aop.2014.10.014

	Probing Planckian physics in de Sitter space with quantum correlations
	Feng, Jun 1; Zhang, Yao-Zhong 1; Gould, Mark D.1; Fan, Heng 2; Sun, Cheng-Yi 3; Yang, Wen-Li 3
刊名	ANNALS OF PHYSICS
	2014-12-01
卷号	351 页码:872-899
关键词	De Sitter Space Alpha-vacua Quantum Entanglement Quantum Communication Channel Classical And Quantum Capacity
ISSN号	0003-4916
DOI	10.1016/j.aop.2014.10.014
文献子类	Article
英文摘要	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.
WOS关键词	SPIN-1/2 PARTICLES ; ENTANGLEMENT ; CREATION ; STATES ; TELEPORTATION ; HORIZON ; CHANNEL ; FIELD ; TIME
语种	英语
出版者	ACADEMIC PRESS INC ELSEVIER SCIENCE
WOS记录号	WOS:000346451900050
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/49949]
专题	中国科学院近代物理研究所
通讯作者	Feng, Jun
作者单位	1.Univ Queensland, Sch Math & Phys, Brisbane, Qld 4072, Australia 2.Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China 3.NW Univ Xian, Inst Modern Phys, Xian 710069, Peoples R China
推荐引用方式 GB/T 7714	Feng, Jun,Zhang, Yao-Zhong,Gould, Mark D.,et al. Probing Planckian physics in de Sitter space with quantum correlations[J]. ANNALS OF PHYSICS,2014,351:872-899.
APA	Feng, Jun,Zhang, Yao-Zhong,Gould, Mark D.,Fan, Heng,Sun, Cheng-Yi,&Yang, Wen-Li.(2014).Probing Planckian physics in de Sitter space with quantum correlations.ANNALS OF PHYSICS,351,872-899.
MLA	Feng, Jun,et al."Probing Planckian physics in de Sitter space with quantum correlations".ANNALS OF PHYSICS 351(2014):872-899.