Continuous half-string representation of string field theory

2003/07/31 by Ehud Fuchs, Michael Kroyter, Alon Marcus · 6 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Noncommutative and Quantum Gravity Theories #Particle physics theoretical and experimental studies #hep-th

paper · pdf · doi:10.1088/1126-6708/2003/11/039

published as JHEP 0311 (2003) 039 · 29 pages, latex. v2: New calculation of the VSFT tachyon mass added to section 4.3, numerical integrals evaluated analytically, typos corrected, ref added

openalex publication_date 2003/11/18 · arxiv created 2003/11/26 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We give the explicit form of the half-string representation in the continuous kappa basis. We show the comma structure of the three-vertex, when expanded around an arbitrary projector, and that the zero-mode must be replaced by the mid-point degree of freedom in the half-string representation. The treatment of the ghost sector enables us to calculate the normalization of the vertices. The simplicity of this formalism is demonstrated with some applications, such as gauge transformations and identification of subalgebras.

Cited by

• Virasoro operators in the continuous basis of string field theory
• Chan-Paton factors and higgsing from vacuum string field theory
• Witten’s ghost vertex made simple
• Boundary and midpoint behaviors of lump solutions in vacuum string field theory
• Schnabl's Script L0operator in the continuous basis
• A fresh look at midpoint singularities in the algebra of string fields
• Lattice string field theory: the linear dilaton in one dimension
• Normalization anomalies in level truncation calculations

Related

• Bose-Fermi Equivalence in the Half String Theory
• On Vertex Operators in Effective String Theory
• The Conformal Equivalence of the half string 3-vertex and the Sciuto,Caneschi-schwimmer-veneziano 3-vertex
• Virasoro operators in the continuous basis of string field theory
• Selected topics in string field theory