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gr-qc1993★ 1.6k cited
Average Entropy of a Subsystem
Don N. Page
If a quantum system of Hilbert space dimension is in a random pure state, the average entropy of a subsystem of dimension is conjectured to be $S_{m,n}=\sum_{k=n+1}^…
gr-qc1993★ 16 cited
Clock Time and Entropy
Don N. Page
Testable conditional probabilities appear to be restricted to single hypersurfaces (marvelous moments) and depend only on stationary observables. Observable evolution, such as a ch…
gr-qc1993★ 5 cited
No Superluminal Expansion of the Universe
Don N. Page
The apparent superluminal growth in the size of a sufficiently large part of the universe can be ascribed to the special relativistic effect of time dilation.