Black hole entropy without brick walls
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The properties of the thermal radiation are discussed by using the new equation of state density motivated by the generalized uncertainty relation in the quantum gravity. There is no burst at the last stage of the emission of a Schwarzshild black hole. When the new equation of state density is utilized to investigate the entropy of a scalar field outside the horizon of a static black hole, the divergence appearing in the brick wall model is removed, without any cutoff. The entropy proportional to the horizon area is derived from the contribution of the vicinity of the horizon.
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Black Hole Thermodynamics and Gravity's Rainbow
Gravity's Rainbow framework eliminates the need for regularization and renormalization in calculations of scalar field density of states near rotating black hole horizons.
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