Nonunitary Classically Stable HD Gravity
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Classical instability in fourth order gravity is cured at the expense of unitarity. The appearance of hidden degrees of freedom replicating those of ordinary matter allows for ordinary thermodynamic entropy and black hole entropy to be identified with von Neumann entropy. The emergent picture gives a substantial agreement with B-H entropy and Hawking temperature.
6 pages, to appear in Proceedings of the First International Conference on Quantum Limits to the Second Law, July 29-31, 2002, University of San Diego, San Diego, CA
6 pages, to appear in Proceedings of the First International Conference on Quantum Limits to the Second Law, July 29-31, 2002, University of San Diego, San Diego, CA