José Antonio Oller is professor at the department of Physics of the University of Murcia, Spain.

As a theoretical nuclear and particle physicist his research interests cover

- effective field theories of QCD in vacuum and in a nuclear environment both in the perturbative and no-perturbative regimes

- meson-meson, meson-baryon and nucleon-nucleon production and scattering

- hadron spectroscopy

- heavy quarks

- S-matrix theory

topics on which he has authored more than hundred scientific articles.

Preface.- Basics on dispersion relations.- Two-body scattering amplitudes with applications.- Final-state interactions with applications. ¿