This paper focuses on some literary expressions of the role of faith in our engagement with things political from the pen of C. S. Lewis, whose writings are distinguished by a combination of intellectual force and ima...This paper focuses on some literary expressions of the role of faith in our engagement with things political from the pen of C. S. Lewis, whose writings are distinguished by a combination of intellectual force and imaginative flair. In an increasingly secular climate, he sought to bring God back into the equation, and it is not surprising to find some current issues addressed within his imaginative representations of a vibrant spiritual reality. His ideas and ideology are inextricably linked to his Christian faith. Several critical essays reflect his interest in both theology and political issues including： the ethical use of technology, civil liberties, ecology, pacifism, and animal rights. This material forms the layers of his science-fiction trilogy which includes themes of spiritual warfare, factions, faith, and a fairy tale ending. His theology was not confined to the disciplines of a particular school of thought and his approach to things political follows no party line. His critical essays and stories are concerned with the practicalities of life, but are never reduced to a merely social gospel; they always have a cosmic dimension.展开更多
The study of optomechanical systems has attracted much attention, most of which are concentrated in the physics in the smallamplitude regime. While in this article, we focus on optomechanics in the extremely-large-amp...The study of optomechanical systems has attracted much attention, most of which are concentrated in the physics in the smallamplitude regime. While in this article, we focus on optomechanics in the extremely-large-amplitude regime and consider both classical and quantum dynamics. Firstly, we study classical dynamics in a membrane-in-the-middle optomechanical system in which a partially reflecting and flexible membrane is suspended inside an optical cavity. We show that the membrane can present self-sustained oscillations with limit cycles in the shape of sawtooth-edged ellipses and exhibit dynamical multistability. Then, we study the dynamics of the quantum fluctuations around the classical orbits. By using the logarithmic negativity, we calculate the evolution of the quantum entanglement between the optical cavity mode and the membrane during the mechanical oscillation. We show that there is some synchronism between the classical dynamical process and the evolution of the quantum entanglement.展开更多
文摘This paper focuses on some literary expressions of the role of faith in our engagement with things political from the pen of C. S. Lewis, whose writings are distinguished by a combination of intellectual force and imaginative flair. In an increasingly secular climate, he sought to bring God back into the equation, and it is not surprising to find some current issues addressed within his imaginative representations of a vibrant spiritual reality. His ideas and ideology are inextricably linked to his Christian faith. Several critical essays reflect his interest in both theology and political issues including： the ethical use of technology, civil liberties, ecology, pacifism, and animal rights. This material forms the layers of his science-fiction trilogy which includes themes of spiritual warfare, factions, faith, and a fairy tale ending. His theology was not confined to the disciplines of a particular school of thought and his approach to things political follows no party line. His critical essays and stories are concerned with the practicalities of life, but are never reduced to a merely social gospel; they always have a cosmic dimension.
基金supported by the National Natural Science Foundation of China(Grant Nos.11175094 and 91221205)the National Key Basic Research Program of China(Grant No.2011CB9216002)
文摘The study of optomechanical systems has attracted much attention, most of which are concentrated in the physics in the smallamplitude regime. While in this article, we focus on optomechanics in the extremely-large-amplitude regime and consider both classical and quantum dynamics. Firstly, we study classical dynamics in a membrane-in-the-middle optomechanical system in which a partially reflecting and flexible membrane is suspended inside an optical cavity. We show that the membrane can present self-sustained oscillations with limit cycles in the shape of sawtooth-edged ellipses and exhibit dynamical multistability. Then, we study the dynamics of the quantum fluctuations around the classical orbits. By using the logarithmic negativity, we calculate the evolution of the quantum entanglement between the optical cavity mode and the membrane during the mechanical oscillation. We show that there is some synchronism between the classical dynamical process and the evolution of the quantum entanglement.
