1999/12/22 by J. Froehlich, Jürg Fröhlich, Olivier Grandjean +4
Mathematics · Physics and Astronomy · #Black Holes and Theoretical Physics #Boundary (topology) #Boundary conformal field theory #Boundary value problem #Conformal field theory #Conformal map #Cosmology and Gravitation Theories #Dirichlet distribution #Discrete mathematics #Geometry #Mathematical analysis #Mathematical physics #Mathematics #Neumann boundary condition #Nonlinear Waves and Solitons #Physics #Pure mathematics #Robin boundary condition #String (physics) #String field theory #Twist #Vertex (graph theory) #hep-th
paper · pdf · doi:10.1016/s0550-3213(00)00237-6
published as Nucl.Phys. B583 (2000) 381-410 · 30 pages, Plain TeX, 2 ps-figures; references added
arxiv created 1999/12/22 · openalex publication_date 2000/09/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We study conformal field theory correlation functions relevant for string diagrams with open strings that stretch between several parallel branes of different dimensions. In the framework of conformal field theory, they involve boundary condition changing twist fields which intertwine between Neumann and Dirichlet conditions. A Knizhnik-Zamolodchikov-like differential equation for correlators of such boundary twist fields and ordinary string vertex operators is derived, and explicit integral formulas for its solutions are provided.