2023/07/07 by Chiara Damiolini, Damiolini, Chiara, Angela Gibney +3 · 4 citations
Mathematics · #14D21 (secondary) #14H10 #17B69 (primary) #81R10 #81T40 #Advanced Topics in Algebra #Algebraic Geometry (math.AG) #Algebraic structures and combinatorial models #Commutative Algebra and Its Applications #FOS: Mathematics #Quantum Algebra (math.QA)
paper · pdf · doi:10.48550/arxiv.2307.03767
openalex publication_date 2023/07/07 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Here we define a series of associative algebras attached to a vertex operator algebra V, called mode transition algebras, showing they reflect both algebraic properties of V and geometric constructions on moduli of curves. One can define sheaves of coinvariants on pointed coordinatized curves from V-modules. We show that if the mode transition algebras admit multiplicative identities with certain properties, these sheaves deform as wanted on families of curves with nodes (so V satisfies smoothing). Consequently, coherent sheaves of coinvariants defined by vertex operator algebras that satisfy smoothing form vector bundles. We also show that mode transition algebras give information about higher level Zhu algebras and generalized Verma modules. As an application, we completely describe higher level Zhu algebras of the Heisenberg vertex algebra for all levels, proving a conjecture of Addabbo--Barron.