# Emergent semiclassical time in quantum gravity: II. Full geometrodynamics and minisuperspace examples

@article{Anderson2007EmergentST, title={Emergent semiclassical time in quantum gravity: II. Full geometrodynamics and minisuperspace examples}, author={E. Anderson}, journal={Classical and Quantum Gravity}, year={2007}, volume={24}, pages={2979-3004} }

I apply the preceding paper's emergent semiclassical time approach to geometrodynamics. The analogy between the two papers is useful at the level of the quadratic constraints, while I document the differences between the two due to the underlying differences in their linear constraints. I find that the emergent time-dependent wave equation for the universe in general not a time-dependent Schrodinger equation but rather a more general equation containing second time derivatives, and estimate in… Expand

#### 4 Citations

Emergent semiclassical time in quantum gravity: I. Mechanical models*

- Physics
- 2007

The emergent semiclassical time approach to resolving the problem of time in quantum gravity is considered in the arena of relational particle toy models. In situations with 'heavy' and 'light'… Expand

Gauge Fixing and the Semiclassical Interpretation of Quantum Cosmology

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Abstract We make a critical review of the semiclassical interpretation of quantum cosmology and emphasise that it is not necessary to consider that a concept of time emerges only when the… Expand

Inflation and the semiclassical dynamics of a conformal scalar field

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We derive the semiclassical evolution of massless conformally coupled scalar matter in the de Sitter space-time from the Born-Oppenheimer reduction of the Wheeler-DeWitt equation. We find a… Expand

Analogue spacetimes: Toy models for ''quantum gravity''

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- 2007

Why are “analogue spacetimes” interesting? For the purposes of this workshop the answer is simple: Analogue spacetimes provide one with physically well-defined and physically wellunderstood concrete… Expand

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