3 papers
hep-th2025
Positivity with Long-Range Interactions
B. Bellazzini, J. Berman, G. Isabella +3
We introduce infrared finite, analytic, crossing symmetric, Regge behaved, and Lorentz invariant amplitudes , labeled by the experimental energy resolut…
hep-th2025
(Super)Gravity from Positivity
Brando Bellazzini, Alex Pomarol, Marcello Romano +1
We investigate whether the effective theory for isolated, massive, and weakly interacting spin- particles is compatible with causality and unitarity-i.e., the positivity of sc…
hep-th2024
Bootstrapping the Chiral-Gravitational Anomaly
Zi-Yu Dong, Teng Ma, Alex Pomarol +1
We analyze causality and unitarity constraints in graviton scattering amplitudes, aiming to establish new bounds on theories with -gravitational anomalies, such as axion mode…