Star Democracy in Open String Field Theory

Details Star Democracy in Open String Field Theory Star Democracy in Open String Field Theory

2003-06-25

arxiv.org/abs/hep-th/0306252v2

JHEP 0309 (2003) 049

Physics

High Energy Physics

High Energy Physics - Theory

20 pages, JHEP style v2: typos corrected, two references added

Scientific paper

10.1088/1126-6708/2003/09/049

We study three types of star products in SFT: the ghosts, the twisted ghosts and the matter. We find that their Neumann coefficients are related to each other in a compact way which includes the Gross-Jevicki relation between matter and ghost sector: we explicitly show that the same relation, with a minus sign, holds for the twisted and nontwisted ghost (which are different but define the same solution). In agreement with this, we prove that matter and twisted ghost coefficients just differ by a minus sign. As a consistency check, we also compute the spectrum of the twisted ghost vertices from conformal field theory and, using equality of twisted and reduced slivers, we derive the spectrum of the non twisted ghost star.

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