论文标题
量子重力中的背景独立性和现场重新定义
Background independence and field redefinitions in quantum gravity
论文作者
论文摘要
人们普遍认为，量子重力的成熟理论应表现出背景独立性和差异性不变性。后者以最通用的形式包括字段重新定义，这是配置空间中的差异性。我们表明，任何量子重力的路径综合方法都会导致这些特性之间的张力，从而无法同时保持。
It is generally believed that a full-fledged theory of quantum gravity should exhibit background independence and diffeomorphism invariance. In its most general form, the latter comprises field redefinitions, which are diffeomorphisms in configuration space. We show that any path-integral approach to quantum gravity leads to a tension between these properties, such that they cannot hold simultaneously.
