Abstract
We derive a partially gauge fixed Hamiltonian for black hole formation via real scalar field collapse. The class of models considered includes many theories of physical interest, including spherically symmetric black holes in D spacetime dimensions. The boundary and gauge fixing conditions are chosen to be consistent with generalized Painleve–Gullstrand coordinates, in which the metric is regular across the black hole future horizon. The resulting Hamiltonian is remarkably simple, and we argue that it provides a good starting point for studying the quantum dynamics of black hole formation.
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