Resonant States in Few-Body Systems: An Introduction to the Special Issue
Résumé
Resonant states are a focal point across numerous branches of physics, encompassing reactions and unbound systems. Theoretically, these states correspond to the complex energy poles of the Hamiltonian matrix. While several methods exist to determine their positions, distinguishing the contribution of resonant states from non-resonant background processes, comparing theoretical predictions with experimental data remains challenging. This issue features several original contributions showcasing cutting-edge research into the dynamics of resonant states.