2001/12/20 by Mark Laidlaw, M. Laidlaw, G. W. Semenoff +1
Mathematics · Physics and Astronomy · #Algebraic structures and combinatorial models #Black Holes and Theoretical Physics #Bosonic string theory #Boundary conformal field theory #Conformal symmetry #Formalism (music) #Heterotic string theory #Invariant (physics) #Non-critical string theory #Quantum Chromodynamics and Particle Interactions #String cosmology #String field theory #hep-th
paper · pdf · doi:10.1088/1126-6708/2003/11/021
published as JHEP 0311:021,2003 · 19 pages, 0 figures
arxiv created 2001/12/20 · openalex publication_date 2003/11/11 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We present a generalization of the boundary state formalism for the bosonic string that allows us to calculate the overlap of the boundary state with arbitrary closed string states. We show that this generalization exactly reproduces world-sheet sigma model calculations, thus giving the correct overlap with both on- and off-shell string states, and that this new boundary state automatically satisfies the requirement for integrated vertex operators in the case of non-conformally invariant boundary interactions.