论文标题
动态差异性
Dynamical diffeomorphisms
论文作者
论文摘要
我们在固定的外部度量标准中为时空的差异构建了一般的有效动力学。尽管与标量字段的熟悉模型相关，但在运动和动态层面上，我们的模型具有微妙的属性。能量量张量由两个独立保守的部分组成。背景解决方案是身份差异性，该溶液的能量量张量会产生有效的宇宙常数。
We construct a general effective dynamics for diffeomorphisms of spacetime, in a fixed external metric. Though related to familiar models of scalar fields as coordinates, our models have subtly different properties, both at kinematical and dynamical level. The energy-momentum tensor consists of two independently conserved parts. The background solution is the identity diffeomorphism and the energy-momentum tensor of this solution gives rise to an effective cosmological constant.
