3 papers
hep-th2025
The Rise of Linear Trajectories
Yu-tin Huang, Sara Ricossa, Francesco Riva +1
In this letter, we consider constraints on the low-energy spectrum of amplitudes with higher-spin exchange. Assuming unitarity, crossing symmetry, and super-convergent high energy…
hep-th2025
Positivity Bounds on Massive Vectors
Francesco Bertucci, Johan Henriksson, Brian McPeak +3
In this paper, we explore positivity bounds for the effective field theory~(EFT) of a single weakly coupled massive vector field. The presence of both mass and spin makes the cross…
hep-th2025
The EFT Bootstrap at Finite
Carl Beadle, Giulia Isabella, Davide Perrone +3
We explore the impact of loop effects on positivity in effective field theories emerging in the infrared from unitary and causal microscopic dynamics. Focusing on massless particle…