Abstract
We point out some common qualitative features of the Coon amplitude — a family of deformations of the Veneziano amplitude with logarithmic Regge trajectories — and the open string scattering amplitude for strings ending on a D-brane in AdS. Both reduce to the Veneziano amplitude at relatively low energies. Both systems have an accumulation point in their spectrum, with an infinite number of states below a certain energy. The approach to this point is very similar. Both have the same high-energy fixed-angle behavior. Nevertheless, we find some differences in the spectrum of states with highest angular momentum. These similarities suggest that there may exist a string background that realizes the Coon amplitude.
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ArXiv ePrint: 2207.06426
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Maldacena, J., Remmen, G.N. Accumulation-point amplitudes in string theory. J. High Energ. Phys. 2022, 152 (2022). https://doi.org/10.1007/JHEP08(2022)152
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DOI: https://doi.org/10.1007/JHEP08(2022)152