4 papers
The Phases of the Scalar S-Matrix Island
Joan Elias Miro, Andrea Guerrieri, Mehmet Asim Gumus
The two-to-two four-dimensional scattering amplitude of identical scalars obeys rigorous two-sided non-perturbative bounds derived via the modern numerical S-matrix bootstrap. Thes…
Neural S-matrix bootstrap II: solvable 4d amplitudes with particle production
Mehmet Asim Gumus, Damien Leflot, Piotr Tourkine +1
We study a model for nonperturbative unitarization of the four-point contact scalar amplitude in four dimensions. It is defined through an infinite sum of planar diagrams, construc…
Tracking S-matrix bounds across dimensions
Mehmet Asim Gumus, Simon Metayer, Piotr Tourkine
We study massive scattering of identical scalar particles in spacetime dimensions 3 to 11 using non-perturbative S-matrix bootstrap techniques. Treating as a continuo…
The S-matrix bootstrap with neural optimizers I: zero double discontinuity
Mehmet Asim Gumus, Damien Leflot, Piotr Tourkine +1
In this work, we develop machine learning techniques to study nonperturbative scattering amplitudes. We focus on the two-to-two scattering amplitude of identical scalar particles,…