Gauge invariant observables from Takahashi-Tanimoto scalar solutions in open string field theory
arXiv:1408.1804
Abstract
Using Maccaferri's formula, we derive new wedge based solutions of open string field theory. The solutions are gauge equivalent to the Takahashi-Tanimoto scalar solutions. The classical action and the gauge invariant overlap are evaluated analytically. We find a perturbative vacuum solution whose gauge invariant observables vanish. We also identify a tachyon vacuum solution whose gauge invariant observables are identical to those of the Erler-Schnabl solution.
14 pages, 1 figure, Typos fixed. References added