Patterns in Open String Field Theory Solutions

Abstract

In open string field theory the kinetic operator mixes matter and ghost sectors, and thus the ghost structure of classical solutions is not universal. Nevertheless, we have found from numerical analysis that certain ratios of expectation values for states involving pure ghost excitations appear to be universal. We give an analytic expression for these ratios and find good evidence that they are common to all known solutions of open string field theory, including the tachyon vacuum solution, lump solutions and string fields representing marginal deformations. We also draw attention to a close correspondence between the expectation values for the pure matter components in the tachyon vacuum solution and those in the solution of a simpler equation for a ghost number zero string field. Finally we observe that the action of L_0 on the tachyon condensate gives a state that is approximately factorized into a matter and a ghost part.

21 pages, LaTeX

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Cited by in corpus (15)

• Rolling Tachyon
• Tachyon Dynamics in Open String Theory
• Proof of vanishing cohomology at the tachyon vacuum
• Decay of Unstable D-branes with Electric Field
• Experimental String Field Theory
• Analytical Solutions of Open String Field Theory
• Marginal and Scalar Solutions in Cubic Open String Field Theory
• Construction of the Vacuum String Field Theory on a non-BPS Brane
• Solving Open String Field Theory with Special Projectors
• Universal regularization for string field theory
• String Field Theory Solution for Any Open String Background. II
• Exact Solutions in SFT and Marginal Deformation in BCFT
• Marginal Deformations In the Open Bosonic String Field Theory for N D0-branes
• Exact Solutions of Open Bosonic String Field Theory
• D-branes as GMS Solitons in Vacuum String Field Theory