Multi-Higgs Production and Unitarity

Multi-particle production has been under scrutiny in spontaneously broken scalar theories. In this article, the self-consistent Schwinger–Dyson equation is solved in the spectral representation, and the multi-scalar production rate is calculated. We find an amplitude growing quadratically with the energy, which leads to an asymptotically decreasing scalar propagator. Abstract Published by the Jagiellonian University 2025 authors