D-branes from conformal field theory

Abstract

An introduction to the construction of D-branes using conformal field theory methods is given. A number of examples are discussed in detail, in particular the construction of all conformal D-branes for the theory of a single free boson on a circle.

19 pages, LaTeX, 4 figures; to appear in the Proceedings of the RTN meeting `The Quantum Structure of Spacetime and the Geometric Nature of Fundamental Interactions', Corfu, September 2001; v2: minor corrections

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