Speaker
Max Hansen
Description
I will review recent advances in studying three-particle interactions directly from lattice QCD. By employing mathematical relations that connect finite-volume energies and matrix elements to physical scattering and decay amplitudes, it is now possible to calculate observables that go beyond the single-hadron regime. While the application to two-particle channels is well established, three-hadron amplitudes represents the current frontier. In addition to outlining the key formalism, I will highlight recent theoretical developments (e.g. for D D pi and N pi pi amplitudes) as well as recent applications (e.g. rho pi to pi pi pi scattering with a rigorously resonant rho). I will also discuss future prospects and open challenges.