https://doi.org/10.1140/epjp/s13360-025-06431-9
Regular Article
Stringy scaling of n-point hard string scattering amplitudes
1
Department of Electrophysics, National Yang Ming Chiao Tung University, Hsinchu, Taiwan, R.O.C.
2
Center for Theoretical and Computational Physics (CTCP), National Yang Ming Chiao Tung University, Hsinchu, Taiwan, R.O.C.
Received:
4
April
2024
Accepted:
14
May
2025
Published online:
13
June
2025
Motivated by the recent calculation of the SL
symmetry of n-point Lauricella string scattering amplitudes (SSA) of open bosonic string theory, we calculate ratios of the solvable infinite linear relations of arbitrary n-point hard SSA (HSSA). We discover a general stringy scaling behavior for all n-point HSSA to all string loop orders. For the special case of 
, the stringy scaling behavior reduces to the infinite linear relations and constant ratios among HSSA conjectured by Gross (Phys Rev Lett 60:1229, 1988) and later corrected and calculated by the method of decoupling of zero-norm states (Chan et al. in Phys Rev Lett 96(17): 171601, 2006).
© The Author(s) 2025
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