Unitarity of Superstring Field Theory

Abstract

We complete the proof of unitarity of (compactified) heterotic and type II string field theories by showing that in the cut diagrams only physical states appear in the sum over intermediate states. This analysis takes into account the effect of mass and wave-function renormalization, and the possibility that the true vacuum may be related to the perturbative vacuum by small shifts in the string fields.

arXiv commentLaTeX, 16 pages; v2: clarifications added

References in corpus (7)

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• Introduction to string field theory
• Superstring Perturbation Theory Revisited
• Cutkosky Rules for Superstring Field Theory
• BV Master Action for Heterotic and Type II String Field Theories
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• UV-Complete Gravity Amplitudes and the Triple Product
• Mapping between Witten and Lightcone String Field Theories
• Quantum Gravity from Timelike Liouville theory
• Unitarity Cuts of the Worldsheet
• Cutkosky Rules and Unitarity (Violation) in D-instanton Amplitudes
• Hyperbolic string tadpole
• Highly Excited Strings I: Generating Function
• Hyperbolic Geometry and Closed Bosonic String Field Theory I: The String Vertices Via Hyperbolic Riemann Surfaces
• On the Limits of Effective Quantum Field Theory: Eternal Inflation, Landscapes, and Other Mythical Beasts
• Equivalence of Two Contour Prescriptions in Superstring Perturbation Theory
• Hyperbolic Geometry and Closed Bosonic String Field Theory II: The Rules for Evaluating the Quantum BV Master Action
• Localization of effective actions in Heterotic String Field Theory
• Vortex lattice in the crossover of a Bose gas from weak coupling to unitarity
• Closed string deformations in open string field theory I: bosonic string
• Space-time supersymmetry in WZW-like open superstring field theory
• Bound states of massive complex ghosts in superrenormalizable quantum gravity theories\
• Weak-coupling to unitarity crossover in Bose-Fermi mixtures: Mixing-demixing and spontaneous symmetry breaking in trapped systems
• Quantum Closed Superstring Field Theory and Hyperbolic Geometry I: Construction of String Vertices
• Quantum deformation of cubic string field theory
• Multiloop Amplitudes of Light-cone Gauge NSR String Field Theory in Noncritical Dimensions
• Hyperbolic Geometry of Superstring Perturbation Theory
• Strings in Ramond-Ramond Backgrounds from the Neveu-Schwarz-Ramond Formalism
• Causality in String Field Theory