Testing the Uniqueness of the Open Bosonic String Field Theory Vacuum

Abstract

The operators K_n are generators of reparameterization symmetries of Witten's cubic open string field theory. One pertinent question is whether they can be utilised to generate deformations of the tachyon vacuum and thereby violate its uniqueness. We use level truncation to show that these transformations on the vacuum are in fact pure gauge transformations to a very high accuracy, thus giving new evidence for the uniqueness of the perturbatively stable vacuum. Equivalently, this result implies the vanishing of some discrete cohomology classes of the BRST operator in the stable vacuum.

27 pages; references added, minor typos corrected, added important note which was pointed out by H. Hata

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Cited by in corpus (8)

• Decay of Unstable D-branes with Electric Field
• Experimental String Field Theory
• Tachyon Condensation: Calculations in String Field Theory
• Proposal for Background Independent Berkovits' Superstring Field Theory
• Tachyonic Kink and Lump-like Solutions in Superstring Field Theory
• Survey of the Tachyonic Lump in Bosonic String Field Theory
• On Algebraic Singularities, Finite Graphs and D-Brane Gauge Theories: A String Theoretic Perspective
• Remark about string field for general configuration of N D-instantons