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Observational Selection Effects in Quantum Cosmology
Don N. Page
Scientific theories need to be testable by observations, say using Bayes' theorem. A complete theory needs at least the three parts of dynamical laws for specified physical variabl…
Bremsstrahlung Effects around Evaporating Black Holes
Don N. Page, B. J. Carr, Jane H. MacGibbon
We discuss a variety of bremsstrahlung processes associated with charged particles emitted by evaporating black holes. We show that such particles produce a negligible number of br…
Do Evaporating Black Holes Form Photospheres?
Jane H. MacGibbon, B. J. Carr, Don N. Page
Several authors, most notably Heckler, have claimed that the observable Hawking emission from a microscopic black hole is significantly modified by the formation of a photosphere a…
The Height of a Giraffe
Don N. Page
A minor modification of the arguments of Press and Lightman leads to an estimate of the height of the tallest running, breathing organism on a habitable planet as the Bohr radius m…
Typicality Defended
Don N. Page
Hartle and Srednicki have argued that there is no observational evidence favoring our typicality. Here it is shown that such evidence does arise from including the `normalization p…
No-Bang Quantum State of the Cosmos
Don N. Page
A quantum state of the entire cosmos (universe or multiverse) is proposed which is the equal mixture of the Giddings-Marolf states that are asymptotically single de Sitter spacetim…