General Covariance and the "Problem of Time" in a Discrete Cosmology
arXiv:gr-qc/0202097
Abstract
Identifying an appropriate set of ``observables'' is a nontrivial task for most approaches to quantum gravity. We describe how it may be accomplished in the context of a recently proposed family of stochastic (but classical) dynamical laws for causal sets. The underlying idea should work equally well in the quantum case.
arXiv commentplainTeX, 17 pages on 8.5x11 inch paper. To appear in the proceedings of the Alternative Natural Philosophy Association meeting, held August 16-21, 2001, Cambridge, England
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- The Random Walk in Generalized Quantum Theory
- Light, Links and Causal Sets
- Smooth Singularities Exposed: Chimeras of the Differential Spacetime Manifold
- Causal sets and the deep structure of spacetime
- The origin of causal set structure in the quantum universe
- Universal homogeneous causal sets
- A New Approach to Quantising Space-Time: I. Quantising on a General Category
- Observables for cyclic causal set cosmologies
- If time had no beginning
- Photon dispersion in causal sets
- Ten Theses on Black Hole Entropy
- Stochastic Einstein Locality Revisited
- Finitary-Algebraic `Resolution' of the Inner Schwarzschild Singularity