Download e-book for kindle: A Mathematical Introduction to Conformal Field Theory by Martin Schottenloher

By Martin Schottenloher

ISBN-10: 3540686258

ISBN-13: 9783540686255

The first a part of this ebook offers an in depth, self-contained and mathematically rigorous exposition of classical conformal symmetry in n dimensions and its quantization in dimensions. particularly, the conformal teams are made up our minds and the looks of the Virasoro algebra within the context of the quantization of two-dimensional conformal symmetry is defined through the class of primary extensions of Lie algebras and teams. the second one half surveys a few extra complex issues of conformal box conception, reminiscent of the illustration concept of the Virasoro algebra, conformal symmetry inside of string concept, an axiomatic method of Euclidean conformally covariant quantum box concept and a mathematical interpretation of the Verlinde formulation within the context of moduli areas of holomorphic vector bundles on a Riemann surface.
The considerably revised and enlarged moment variation makes particularly the second one a part of the e-book extra self-contained and educational, with many extra examples given. additionally, new chapters on Wightman's axioms for quantum box idea and vertex algebras increase the survey of complex issues. An outlook making the relationship with most modern advancements has additionally been added.

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Additional resources for A Mathematical Introduction to Conformal Field Theory

Example text

13. Let f : C \ S → C be holomorphic and injective with a discrete set of singularities S ⊂ C. Then, f is a restriction of a M¨obius transformation. Consequently, it can be holomorphically continued on C or C \ {p}, p ∈ S. Proof. By the theorem of Casorati–Weierstraß, the injectivity of f implies that all singularities are poles. Again from the injectivity it follows by the Riemann removable singularity theorem that at most one of these poles is not removable and this pole is of first order. The omission of larger parts of the domain or of the range also yields no infinitedimensional group: doubtless, Mb should be a subgroup of the conformal group G .

A projective representation R of G is, in general, a continuous homomorphism R : G → U(P) with respect to the strong topology on U(P) (P = P(H)). Note that U(H) and U(P) are topological groups with respect to the strong topology (cf. 11). Moreover, both these groups are connected and metrizable (see below). The reason that in the context of representation theory one prefers the strong topology over the norm topology is that only few homomorphisms G → U(H) turn out to be continuous with respect to the norm topology.

Now Λ, Λ ∈ O(p + 1, q + 1) implies r = 1 or r = −1. 7. Let ϕ : M → R p,q be a conformal transformation on a connected open subset M ⊂ R p,q . Then ϕ : N p,q → N p,q is called a conformal continuation of ϕ , if ϕ is a conformal diffeomorphism (with conformal inverse) and if ı(ϕ (x)) = ϕ (ı(x)) for all x ∈ M. 8. In a more conceptual sense the notion of a conformal compactification should be defined and used in the following general formulation. A conformal compactification of a connected semi-Riemannian manifold X is a compact semiRiemannian manifold N together with a conformal embedding ı : X → N such that 28 2 The Conformal Group 1.

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A Mathematical Introduction to Conformal Field Theory by Martin Schottenloher


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