Speaker
Description
Accessing the hadron spectrum from Quantum Chromodynamics (QCD) poses several challenges due to its nonperturbative nature and the fact that many states couple strongly to multi-particle decay channels. Recent advances in theoretical formalisms and numerical algorithms have made it possible to study few-hadron systems directly from QCD. A synergistic approach combining lattice QCD with scattering theory provides a systematic pathway to determine hadron spectra and scattering amplitudes from first principles. In this talk, I will present an overview of this program, with an emphasis on recent developments in three-body dynamics and electroweak matrix elements of few-body systems. These techniques are pushing the boundaries of resolving the few-body problem in hadron spectroscopy from first principles.