Split string field theory II

Details Split string field theory II Split string field theory II

2001-06-04

arxiv.org/abs/hep-th/0106036v2

JHEP 0108:010,2001

Physics

High Energy Physics

High Energy Physics - Theory

44 pages, Latex; v2: reference added, typos fixed, footnote added regarding ghost solution

Scientific paper

10.1088/1126-6708/2001/08/010

We describe the ghost sector of cubic string field theory in terms of degrees of freedom on the two halves of a split string. In particular, we represent a class of pure ghost BRST operators as operators on the space of half-string functionals. These BRST operators were postulated by Rastelli, Sen, and Zwiebach to give a description of cubic string field theory in the closed string vacuum arising from condensation of a D25-brane in the original tachyonic theory. We find a class of solutions for the ghost equations of motion using the pure ghost BRST operators. We find a vanishing action for these solutions, and discuss possible interpretations of this result. The form of the solutions we find in the pure ghost theory suggests an analogous class of solutions in the original theory on the D25-brane with BRST operator Q_B coupling the matter and ghost sectors.

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