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Tantum Gravity: A Triple-Scaling Limit of Quantum Gravity

Defines a limit of quantum gravity in which Planck's constant tends to infinity while Newton's constant and the speed of light tend to zero, holding the combinations G c^-4 and h-bar c fixed. In this 'tantum gravity' limit the laws of black hole thermodynamics survive, giving a simplified arena in which black hole entropy and evaporation puzzles may be studied without the full complexity of quantum gravity.