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# An Introduction to Conformal Field Theory

A comprehensive introduction to two-dimensional conformal field theory is given. Conformal field theories have been at the center of much attention during the last fifteen years since they are relevant for at least three different areas of modern theoretical physics: conformal field theories provide toy models for genuinely interacting quantum field theories, they describe two-dimensional critical phenomena, and they play a central role in string theory, at present the most promising candidate for a unifying theory of all forces.