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arXiv · hep-th/0208009

On Ghost Structure of Vacuum Superstring Field Theory

Kazuki Ohmori
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Abstract

After discussing the general form of the kinetic operator around the tachyon vacuum, we determine the specific form of the pure-ghost kinetic operator Q^ by requiring the twist invariance of the action. We obtain a novel result that the Grassmann-even piece Q_even of Q^ must act differently on GSO(+) sector and on GSO(-) sector to preserve the twist invariance, and show that this structure is crucial for gauge invariance of the action. With this choice of Q^, we construct a solution in an approximation scheme which is conjectured to correspond to a non-BPS D9-brane. We consider both 0-picture cubic and Berkovits' non-polynomial superstring field theories for the NS sector.

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Kazuki Ohmori. 2002-11-07. On Ghost Structure of Vacuum Superstring Field Theory. https://doi.org/10.1016/s0550-3213(02)00962-8

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