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Boundary Conditions and Predictions of Quantum Cosmology
Don N. Page
A complete model of the universe needs at least three parts: (1) a complete set of physical variables and dynamical laws for them, (2) the correct solution of the dynamical laws, a…
Hawking Emission and Black Hole Thermodynamics
Don N. Page
A brief review of Hawking radiation and black hole thermodynamics is given, based largely upon hep-th/0409024.
Is Our Universe Decaying at an Astronomical Rate?
Don N. Page
Unless our universe is decaying at an astronomical rate (i.e., on the present cosmological timescale of Gigayears, rather than on the quantum recurrence timescale of googolplexes),…
Killing-Yano Tensors, Rank-2 Killing Tensors, and Conserved Quantities in Higher Dimensions
Pavel Krtous, David Kubiznak, Don N. Page +1
From the metric and one Killing-Yano tensor of rank D-2 in any D-dimensional spacetime with such a principal Killing-Yano tensor, we show how to generate k=[(D+1)/2] Killing-Yano t…
Return of the Boltzmann Brains
Don N. Page
Linde in hep-th/0611043 shows that some (though not all) versions of the global (volume-weighted) description avoid the "Boltzmann brain" problem raised in hep-th/0610079 if the un…
Complete Integrability of Geodesic Motion in General Kerr-NUT-AdS Spacetimes
Don N. Page, David Kubiznak, Muraari Vasudevan +1
We explicitly exhibit n-1 constants of motion for geodesics in the general D-dimensional Kerr-NUT-AdS rotating black hole spacetime, arising from contractions of even powers of the…
Quantum Cosmology
Don N. Page
A complete model of the universe needs at least three parts: (1) a complete set of physical variables and dynamical laws for them, (2) the correct solution of the dynamical laws, a…
Predictions and Tests of Multiverse Theories
Don N. Page
Evidence for fine-tuning of physical parameters suitable for life can perhaps be explained by almost any combination of providence, coincidence or multiverse. A multiverse usually…
Is Our Universe Likely to Decay within 20 Billion Years?
Don N. Page
Observations that we are highly unlikely to be vacuum fluctuations suggest that our universe is decaying at a rate faster than the asymptotic volume growth rate, in order that ther…