"Version: 20180701"--Title page verso."A Morgan & Claypool publication as part of IOP Concise Physics"--Title page verso.Includes bibliographical references.1. Introduction and outline -- 2. Some rules for sum rules -- 2.1. Causality and analyticity -- 2.2. Derivation of dispersion relation -- 2.3. Crossing symmetry -- 2.4. Unitarity -- 2.5. Low-energy theorems -- 2.6. Divergencies, subtraction…
"Version: 20240401"--Title page verso.Includes bibliographical references.1. Introduction -- 2. Some rules for sum rules -- 2.1. Causality and analyticity -- 2.2. Derivation of dispersion relations -- 2.3. Crossing symmetry -- 2.4. Unitarity -- 2.5. Low-energy theorems and sum rules -- 2.6. Relaxing the convergence condition -- 2.7. Divergencies, subtractions, and renormalization -- 2.8. An app…