Dynamical diffeomorphisms

Abstract

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.

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Cited by in corpus (5)

• Unitarity, clock dependence and quantum recollapse in quantum cosmology
• Relational observables in Asymptotically safe gravity
• Primordial Non-Gaussianity in Supersolid Inflation
• The dressing field method for diffeomorphisms: a relational framework
• Towards a Geometrization of Renormalization Group Histories in Asymptotic Safety