相对论框架下多体和可观测量子系统的研究

As a combination of general relativity, quantum field theory, quantum information theory and cosmology, relativistic quantum information has been a focus of research in physics recently. This project is devoted to the investigation of multipartite and observable quantum systems in relativistic frames. We are interested in how the acceleration, Hawking radiation, and cosmological event horizon will influence the quantum correlation, quantum nonlocality, and quantum decoherence of multipartite systems. The internal relations between the evolution of observable quantum systems (such as Unruh-DeWitt detectors and accelerated cavities) and Unruh effect (or Hawking radiation ), and whether or not the boundary conditions and Casimir effect of the detectors (or cavities) play roles in the evolution of the systems will be discussed. Besides, the effects of cosmological event horizon, dark matter and dark energy, Planck-scale and gravity wave on the quantum correlations and quantum nonlocality of bipartite and multipartite systems will also be investigated. The research of this project will not only provide a more complete framework for the quantum information theory and general relativity, but also give better insights into entropy and information paradox of black holes, dark matter and dark energy, as well as the detection of gravity wave.

作为广义相对论、量子场论、量子信息理论和宇宙学的交叉学科，最近几年来相对论框架下的量子信息问题已成为物理学研究的新热点。本项目将致力于在相对论框架下研究多体和可观测量子系统。着重探多体系统的量子关联、量子非定域性和退相干在加速度、Hawking辐射和宇宙学视界的影响下会怎样变化；研究Unruh-Dewitt探测器和加速腔等局域可观测系统的演化与Unruh效应（或Hawking辐射）之间的内在联系，以及探测器（或腔）的边界条件和Casimir效应对系统的影响；在宇宙学背景下研究宇宙学视界、暗物质和暗能量、普朗克尺度与引力波对两体和多体系统演化的影响。该项目的研究不但对量子信息理论和相对论理论的进一步发展和完善有十分重大的意义，而且会对黑洞的熵与黑洞信息疑难、暗物质和暗能量、引力波的探测等问题的解决产生积极的推动作用。

作为广义相对论、量子场论、量子信息理论和宇宙学的交叉学科，相对论框架下的量子信息问题是最近几年来物理学研究的热点。本项目研究了相对论框架下研究多体和可观测量子系统。探讨了多体系统的量子关联、量子非定域性、量子相干性和退相干在加速度、Hawking辐射和宇宙学视界的影响下会怎样变化；研究了Unruh-Dewitt探测器、加速腔、加速原子、卫星-地面量子光学系统等局域可观测系统的演化与Unruh辐射、Hawking辐射、和地球引力之间的内在联系，以及探测器（或腔）的边界条件、Casimir效应对系统的影响；在宇宙学背景下研究了宇宙学视界、宇宙的膨胀速率和体积、暗物质和暗能量、普朗克尺度与引力波对两体和多体系统演化的影响。本项目的研究不但对量子信息理论和相对论理论的进一步发展和完善有十分重大的意义，而且会对黑洞的熵与黑洞信息疑难、暗物质和暗能量、引力波的探测等问题的解决产生了积极的推动作用。