Abstract
Equations of gravity when projected on space time horizons resemble Navier–Stokes equation of a fluid with a specific equation of state. Taking the view that the horizon fluid possesses some kind of physical reality beyond the formal mathematical similarity, we provide a statistical mechanical description for such fluids. We show that the model passes two crucial tests — obtaining the correct black hole entropy and negative bulk viscosity. We also show that the horizon fluid predicts the occurrence of mass gap thereby implying horizon-area quantization. We then give a brief sketch of how to go about identifying the atoms of space time.
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