Abstract
An internal singularity of a string four-dimensional black hole with second order curvature corrections is investigated. A restriction to a minimal size of a neutral black hole is obtained in the frame of the model considered. Vacuum polarization of the surrounding space-time caused by this minimal-size black hole is also discussed.
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Alexeyev, S.O., Sazhin, M.V. Four-Dimensional Dilatonic Black Holes in Gauss-Bonnet Extended String Gravity. General Relativity and Gravitation 30, 1187–1201 (1998). https://doi.org/10.1023/A:1026642827809
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DOI: https://doi.org/10.1023/A:1026642827809