arXiv:0807.0315gr-qc
Supermassive Black Holes as Giant Bose-Einstein Condensates
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Abstract
The Schwarzschild metric has a divergent energy density at the horizon, which motivates a new approach to black holes. If matter is spread uniformly throughout the interior of a supermassive black hole, with mass $M\sim M_\star= 2.34 10^8M_\odot$, it may arise from a Bose-Einstein condensate of densely packed H-atoms. Within the Relativistic Theory of Gravitation with a positive cosmological constant, a bosonic quantum field is coupled to the curvature scalar. In the Bose-Einstein condensed groundstate an exact, selfconsistent solution for the metric is presented. It is regular with a specific shape at the origin. The redshift at the horizon is finite but large, $z\sim 10^{14}$$M_\star/M$. The binding energy remains as an additional parameter to characterize the BH; alternatively, the mass observed at infinity can be any fraction of the rest mass of its constituents.
I think the holographic principle and its, especially popular, interpretations are stretching things too far, way outside of the black hole as one can say. There is so far nothing to indicate that the specific conditions inside black hole giving rise to the observed…
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