String theory, once hailed as a potential "theory of everything," continues to progress at an astonishing rate, and this book brings the reader up to date with the latest developments and the most active areas of research in the field. New chapters discuss such topics as Seiberg-Witten theory, M theory and duality., and D-branes. The book includes a review of the fundamentals of string theory, making the presentation of the material self-contained while keeping overlap with the earlier book to a minimum. This book conveys the vitality of the current research and places readers at its forefront.

Inhalt
I Conformal Field Theory and Perturbation Theory.- 1 Introduction to Superstrings.- 2 BPZ Bootstrap and Minimal Models.- 3 WZW Model, Cosets, and Rational Conformal Field Theory.- 4 Modular Invariance and the ADE Classification.- N = 2 SUSY and Parafermions.- 6 YangBaxter Relation.- 7 Toward a Classification of Conformal Field Theories.- 8 Knot Theory and Quantum Groups.- II Nonperturbative Methods.- 9 String Field Theory.- 10 Non polynomial String Field Theory.- 11 2D Gravity and Matrix Models.- 12 Topological Field Theory.- 13 SeibergWitten Theory.- 14 M-Theory and Duality.- 15 D-Branes and CFT/ADS Duality.