3 papers
hep-th2026
Classical Gravitational Scattering from the Ultraviolet and the Absence of Calabi-Yau Integrals in the Conservative Sector at
Zvi Bern, Avery Jackman, Gareth Mansfield +1
We explain why Calabi-Yau and complete elliptic integrals do not contribute to conservative observables at fifth post-Minkowskian order, despite appearing in intermediate steps. At…
hep-th2026
Positivity of the Veneziano Amplitude in Ten Dimensions
Gareth Mansfield
The Veneziano amplitude describing the tree-level scattering of four open superstrings is expected to be consistent with unitarity in ten spacetime dimensions. While this follows i…
hep-th2025
On Unitarity of the Hypergeometric Amplitude
Gareth Mansfield, Marcus Spradlin
The hypergeometric amplitude is a one-parameter deformation of the Veneziano amplitude for four-point tachyon scattering in bosonic string theory that is consistent with -matrix…