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Level truncation analysis of exact solutions in open string field theory

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arxiv 0710.5358 v2 pith:DXK62YWA submitted 2007-10-29 hep-th

Tomohiko Takahashi This is my paper · ORCID
classification hep-th
keywords vacuumenergyleveldensitysolutiontruncationactionanalysis
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We evaluate vacuum energy density of Schnabl's solution using the level truncation calculation and the total action including interaction terms. The level truncated solution provides vacuum energy density expected both for tachyon vacuum and trivial pure gauge. We discuss the role of the phantom term to reproduce correct vacuum energy.

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  1. Numerical solution for tachyon vacuum in the Schnabl gauge

    hep-th 2019-08 conditional novelty 6.0 of 10

    A new level-truncation method reaches level 24 in the Schnabl gauge and shows the tachyon vacuum energy has a local minimum at level 12 before extrapolating toward the analytic value -1.

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