TY - BOOK AU - Dass, N. D. Hari TI - Strings to Strings: : Yang-Mills Flux Tubes, QCD Strings and effective String Theories T2 - Lecture Notes in Physics SN - 9783031353574 (PB) PY - 2023/// CY - Cham Switzerland PB - Springer KW - String Theory KW - Nuclear Physics KW - Elementary Particles N1 - Includes Index; 1. Elements to Elementary Particles 2. Radioactivity and Weak Interactions 3. Nuclear Forces, Meson Field Theories and Their Failures 4. The S-matrix: From Heisenberg Till Now 5. QED: S-Matrix, Causality and Analyticity 6. A Non-perturbative RQFT Primer 7. The Kallen-Lehmann Representation 8. The Lehmann Symanzik Zimmermann (LSZ) Formalism 9. Unitarity and the LSZ Formalism 10. Lehmann Ellipses 11. Dispersion Relations in RQFT 12.Some Uses and Applications of Analyticity and Dispersion Relations 13.In the Land of Complex Angular Momentum 14. Superconvergence Relations, FESR and Duality 15. The Veneziano Formula and the Dual Resonance Model 16. The Operator Formalism and The Dual Resonance Model 17. The Birth of String Theory N2 - This book presents the essentials culminating in the effective string theory of flux tubes in meticulous technical and conceptual detail. The book is divided into four parts. Part One provides historical background, while Part Two (consisting of 14 chapters) covers the passage from Heisenberg's S-matrix theory to String Theory. This includes non-perturbative LSZ formalism, dispersion relations, Regge poles, duality and dual resonance models. Part Three offers a comprehensive analysis of QCD, focusing on important concepts like asymptotic freedom and quark confinement. The section also delves into lattice gauge theories and effective descriptions of superconductivity and strong interactions. Part Four, the final two chapters, describe the lattice gauge theory determinations of Yang-Mills flux tubes in three and four dimensions and effective string theories, including their systematic constructions. These chapters provide detailed technical information to help readers, especially students, develop their expertise in these ideas. This book is ideal for graduate students, postdocs, and senior researchers looking to deepen their understanding of effective string theory and related concepts ER -