引力退相干：主题综述
Gravitational Decoherence: A Thematic Overview
AI总结：
本文围绕引力退相干主题，梳理基于GR和QFT的相关理论及其实验预测，对比其他理论与二者的差异，并说明未来空间GD实验可用于判别引力理论性质与量子理论类别。
摘要：
引力退相干（Gravitational decoherence，GD）指引力引发量子系统呈现经典表观的效应。由于其底层过程涉及广义相对论（GR）、量子场论（QFT）与量子信息领域的问题，GD具有重要的基础理论意义。GD模型种类繁多，其中许多涉及偏离GR和/或QFT的物理内容。本综述围绕一个核心主题设定两个具体目标：（i）介绍基于GR和QFT的GD理论并探究其实验预测；（ii）将其他GD理论置于GR和QFT的审视下，指出它们的理论差异。我们还阐述了未来几十年空间中的GD实验如何在两个层面提供证据：a）区分替代性量子理论与非GR理论；b）判别引力是基础理论还是有效理论。
英文摘要：
Gravitational decoherence (GD) refers to the effects of gravity in actuating the classical appearance of a quantum system. Because the underlying processes involve issues in general relativity (GR), quantum field theory (QFT) and quantum information, GD has fundamental theoretical significance. There is a great variety of GD models, many of them involving physics that diverge from GR and/or QFT. This overview has two specific goals along one central theme: (i) present theories of GD based on GR and QFT and explore their experimental predictions; (ii) place other theories of GD under the scrutiny of GR and QFT, and point out their theoretical differences. We also describe how GD experiments in space in the coming decades can provide evidences at two levels: a) discriminate alternative quantum theories and non-GR theories; b) discern whether gravity is a fundamental or an effective theory.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
