Comma Vertex and String Field Algebra

Abstract

We study the matter part of the algebra of open string fields using the 3-string vertex over the sliver state, which we call ``comma vertex''. By generalizing this comma vertex to the $N$-string overlap, we obtain a closed form of the Neumann coefficients in the $N$-string vertex and discuss its relation to the oscillator representation of wedge states.

13 pages, latex2e, v2: minor corrections

Cited by in corpus (52)

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• Ratio of Tensions from Vacuum String Field Theory
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• Observables as Twist Anomaly in Vacuum String Field Theory
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• Associativity Anomaly in String Field Theory
• ADHM is Tachyon Condensation
• Noncommutative Instantons via Dressing and Splitting Approaches
• Vacuum String Field Theory with B field
• CFT Description of Identity String Field: Toward Derivation of the VSFT Action
• NS Matter Sliver
• String theory as a diffusing system
• Continuous Half-String Representation of String Field Theory
• Squeezed State Projectors in String Field Theory
• Ghost story. I. Wedge states in the oscillator formalism
• Some exact results on the matter star-product in the half-string formalism
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• NS Ghost Slivers
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• Quasi-localized states on noncommutative solitons
• Bubbling AdS and Vacuum String Field Theory
• Chan-Paton factors and Higgsing from Vacuum String Field Theory
• Ghost story. II. The midpoint ghost vertex
• Stretched strings in tachyon condensation models
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