Two-dimensional conformal field theory, full vertex algebra and current-current deformation

Abstract

The main purpose of this paper is a mathematical construction of a non-perturbative deformation of a two-dimensional conformal field theory. We introduce a notion of a full vertex algebra which formulates a compact two-dimensional conformal field theory. Then, we construct a deformation family of a full vertex algebra which serves as a current-current deformation of conformal field theory in physics. The parameter space of the deformation is expressed as a double coset of an orthogonal group, a quotient of an orthogonal Grassmannian. As an application, we consider a deformation of chiral conformal field theories, vertex operator algebras. A current-current deformation of a "vertex operator algebra" may produce new vertex operator algebras. We give a formula for counting the number of the isomorphic classes of vertex operator algebras obtained in this way. We demonstrate it for some holomorphic vertex operator algebra of central charge $24$.

arXiv comment66 pages, 1 figure. In version 4, add several results and the order of the sections was changed. Adv. Math (2023)

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Cited by in corpus (6)

• Wightman fields for two-dimensional conformal field theories with pointed representation category
• The BRST quantisation of chiral BMS-like field theories
• Non-Chiral Vertex Operator Algebra Associated To Lorentzian Lattices And Narain CFTs
• Non-unitary Wightman CFTs and non-unitary vertex algebras
• A Geometric Classification of the Holomorphic Vertex Operator Algebras of Central Charge 24
• Beauty And The Beast Part 2: Apprehending The Missing Supercurrent