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Time-Delay at Higher Genus in High-Energy Open String Scattering

Tsunehide Kuroki·Soo-Jong Rey
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Abstract

We explore some aspects of causal time-delay in open string scattering studied recently by Seiberg, Susskind and Toumbas. By examining high-energy scattering amplitudes at higher order in perturbation theory, we argue that causal time-delay at G-th order is 1/(G+1) times smaller than the time-delay at tree level. We propose a space-time interpretation of the result by utilizing the picture of the high-energy open string scattering put forward by Gross and Manes. We argue that the phenomenon of reduced time-delay is attributed to the universal feature of the space-time string trajectory in high-energy scattering that string shape at higher order remains the same as that at tree level but overall scale is reduced. We also discuss implications to the space-time uncertainty principle and make brief comments on causal time-delay behavior in space/time noncommutative field theory.

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Tsunehide Kuroki, Soo-Jong Rey. 2000-12-06. Time-Delay at Higher Genus in High-Energy Open String Scattering. https://doi.org/10.1016/s0370-2693(01)00034-x

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