TY - EJOUR AU - Green, Jeremy Russell TI - Hadron spectroscopy and interactions IS - DESY-26-031 M1 - PUBDB-2026-00863 M1 - DESY-26-031 M1 - arXiv:2602.23244 PY - 2026 N1 - 23 pages, 5 figures. Talk presented at the 42nd International Symposium on Lattice Field Theory (LATTICE2025), 2-8 November 2025, Tata Institute of Fundamental Research, Mumbai, India AB - In recent years, lattice QCD calculations of hadron spectroscopy have concentrated on resonances and shallow bound states detected via poles in two- and three-hadron scattering amplitudes. Hadron interactions have therefore become a key focus. In these proceedings, I review the current state of the art and recent advances in methods for studying hadron interactions via finite-volume spectroscopy and finite-volume quantization conditions. I will also review recent spectroscopy studies and results presented at Lattice 2025, with a focus on charmed mesons, the doubly charmed tetraquark, and the doubly bottom tetraquark. LB - PUB:(DE-HGF)25 DO - DOI:10.3204/PUBDB-2026-00863 UR - https://bib-pubdb1.desy.de/record/646462 ER -