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Diagrams for symmetric product orbifolds

2009/05/31 by Ari Pakman, Leonardo Rastelli, Shlomo S. Razamat +1 · 156 citations
Mathematics · Physics and Astronomy · #Algebraic structures and combinatorial models #Black Holes and Theoretical Physics #Conformal map #Diagram #Diagrammatic reasoning #Field (mathematics) #Homotopy and Cohomology in Algebraic Topology #Limit (mathematics) #Orbifold #Product (mathematics) #Twist #hep-th

paper · pdf · doi:10.1088/1126-6708/2009/10/034

published in Journal of High Energy Physics 2009(10), 034 (Springer Nature) · 43 pages, 19 figures, v2: references added

openalex publication_date 2009/10/13 · arxiv created 2009/10/21 · arxiv updated 2010/03/23 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We develop a diagrammatic language for symmetric product orbifolds of two-dimensional conformal field theories. Correlation functions of twist operators are written as sums of diagrams: each diagram corresponds to a branched covering map from a surface where the fields are single-valued to the base sphere where twist operators are inserted. This diagrammatic language facilitates the study of the large N limit and makes more transparent the analogy between symmetric product orbifolds and free non-abelian gauge theories. We give a general algorithm to calculate the leading large N contribution to four-point correlators of twist fields.

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