The Breakdown of String Perturbation Theory for Many External Particles

Abstract

We consider massless string scattering amplitudes in a limit where the number of external particles becomes very large, while the energy of each particle remains small. Using the growth of the volume of the relevant moduli space, and by means of independent numerical evidence, we argue that string perturbation theory breaks down in this limit. We discuss some remarkable implications for the information paradox.

(v1) 5 pages (v2) refs added; consistent with PRL version

References in corpus (3)

• Black Hole Formation and Classicalization in Ultra-Planckian 2 -> N Scattering
• A toy model of black hole complementarity
• Tunneling into Microstate Geometries: Quantum Effects Stop Gravitational Collapse

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