Speaker
Description
The study of the hadron spectrum from first-principles in QCD has been facilitated by performing a numerical calculation of the path integral of the theory. This technique, known as lattice QCD, has some inherent restrictions, e.g. it needs to be performed in a finite Euclidean spacetime. This restriction prevents a direct calculation of real-time dynamics like those associated with scattering processes, a priori limiting its scope to states stable under the strong interactions. I will review state-of-the-art techniques that allow to circumvent these challenges, which have been implemented successfully to study properties of resonant hadronic states. Recent relevant examples will be discussed, like tetraquarks with heavy quark content, and hybrid mesons in the light quark sector.
