934 citations · 3.5k across the 98 of their papers we have counts for
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gr-qc1998★ 7 cited
Generalized Quantum Theory and Black Hole Evaporation
James B. Hartle
Usually quantum theory is formulated in terms of the evolution of states through spacelike surfaces. However, a generalization of this formulation is needed for field theory in spa…
quant-ph1998★ 14 cited
Entropy of Classical Histories
Todd A. Brun, James B. Hartle
We consider a number of proposals for the entropy of sets of classical coarse-grained histories based on the procedures of Jaynes, and prove a series of inequalities relating these…