论文标题
自重影响量子状态
Self gravity affects quantum states
论文作者
论文摘要
我们研究量子系统的自我重力如何影响其状态中存在的量子相干性。静态，大型系统的空间叠加往往会迅速失去连贯性，而光或无质量的颗粒不受影响。此外，大型和重物也迅速定位为单个经典位置。系统的特征大小及其康普顿长度的比率决定了效果的开始，在与系统的重力自能量成反比的时间范围内变得很重要。我们的结果可以解释物理系统的两个重要方面：将单个颗粒或光子置于遥远位置的可能性，以及在大型物体之间保持量子相干性的困难。
We study how self gravitation of quantum systems affects the quantum coherence present in their state. Spatial superpositions of static, large, heavy systems tend to rapidly lose coherence, whereas light or massless particles are unaffected. Furthermore, large and heavy objects also rapidly localize into a single classical position. The ratio of the characteristic size of the system and its Compton length determines the onset of the effects, which become significant at a timescale that is inversely proportional to the system's gravitational self energy. Our results can explain two important aspects of physical systems: the possibility of coherently placing individual particles or photons in distant positions, and the difficulty of maintaining quantum coherence between massive objects.
