Wightman fields for two-dimensional conformal field theories with pointed representation category

Abstract

Two-dimensional full conformal field theories have been studied in various mathematical frameworks, from algebraic, operator-algebraic to categorical. In this work, we focus our attention on theories with chiral components having pointed braided tensor representation subcategories, namely having automorphisms whose equivalence classes necessarily form an abelian group. For such theories, we exhibit the explicit Hilbert space structure and construct primary fields as Wightman fields for the two-dimensional full theory. Given a finite collection of chiral components with automorphism categories with trivial total braiding, we also construct a local extension of their tensor product as a chiral component. We clarify the relations with the Longo-Rehren construction, and illustrate these results with concrete examples including the U(1)-current.

arXiv comment48 pages, 3 TikZ figures

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• Non-unitary Wightman CFTs and non-unitary vertex algebras
• Conformal nets from minimal W-algebras
• Separable algebras in multitensor C${}^{\ast }$-categories are unitarizable