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About: Massless free scalar bosons in two dimensions     Goto   Sponge   NotDistinct   Permalink

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Massless free scalar bosons are a family of two-dimensional conformal field theories, whose symmetry is described by an abelian affine Lie algebra. Since they are free i.e. non-interacting, free bosonic CFTs are easily solved exactly. Via the Coulomb gas formalism, they lead to exact results in interacting CFTs such as minimal models.Moreover, they play an important role in the worldsheet approach to string theory.