2013

Semiclassical geons as solitonic black hole remnants

Lobo, Francisco S. N., Olmo, Gonzalo J., Rubiera-Garcia, D.

Understand

We find that the end state of black hole evaporation could be represented by non-singular and without event horizon stable solitonic remnants with masses of the order the Planck scale and up to 16 units of charge.

Though these objects are locally indistinguishable from spherically symmetric, massive electric (or magnetic) charges, they turn out to be sourceless geons containing a wormhole generated by the electromagnetic field.
Our results are obtained by interpreting semiclassical corrections to Einstein's theory in the first-order (Palatini) formalism, which yields second-order equations and avoids the instabilities of the usual (metric) formulation of quadratic gravity.
We also discuss the potential relevance of these solutions for primordial black holes and the dark matter problem.

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