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String-theoretic unitary S-matrix at the threshold of black-hole production

G. Veneziano
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Abstract

Previous results on trans-Planckian collisions in superstring theory are rewritten in terms of an explicitly unitary S-matrix whose range of validity covers a large region of the energy/impact-parameter plane. Amusingly, as part of this region's border is approached, properties of the final state start resembling those expected from the evaporation of a black-hole even well below its production threshold. More specifically, we conjecture that, in an energy window extending up such a threshold, inclusive cross sections satisfy a peculiar "anti-scaling" behaviour seemingly preparing for a smooth transition to black-hole physics.

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G. Veneziano. 2004-10-22. String-theoretic unitary S-matrix at the threshold of black-hole production. https://doi.org/10.1088/1126-6708%2F2004%2F11%2F001

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