Origin of time and probability in quantum cosmology
arXiv:2503.10752 · doi:10.1088/1742-6596/3017/1/012007
Abstract
We discuss how the classical notions of time and causal structure may emerge together with quantum-mechanical probabilities from a universal quantum state. For this, the process of decoherence between semiclassical branches is important. Our discussion is based on quantum geometrodynamics, a canonical approach to quantum gravity. In this framework, a particular boundary condition may illuminate the issue of the arrow of (classical) time in connection to the growth of entanglement entropy.
Contribution to appear in the proceedings of the 11th International Workshop DICE2024, "Spacetime - Matter - Quantum Mechanics'', Castiglioncello (Tuscany), 16-20 September 2024
References in corpus (9)
- Models of Wave-function Collapse, Underlying Theories, and Experimental Tests
- Quantum Theory of Probability and Decisions
- Quantum states and generalized observables: a simple proof of Gleason's theorem
- Probabilities from Entanglement, Born's Rule from Envariance
- Pointer states for primordial fluctuations in inflationary cosmology
- Self-Locating Uncertainty and the Origin of Probability in Everettian Quantum Mechanics
- Observations in Quantum Cosmology
- Branch-counting in the Everett Interpretation of quantum mechanics
- Time and its arrow from quantum geometrodynamics?