The closed string tadpole in open string field theory

Details The closed string tadpole in open string field theory The closed string tadpole in open string field theory

2008-04-07

arxiv.org/abs/0804.1131v1

JHEP 0808:063,2008

Physics

High Energy Physics

High Energy Physics - Theory

32 pages, 9 figures

Scientific paper

10.1088/1126-6708/2008/08/063

We compute a class of gauge invariant observables for marginal solutions and the tachyon vacuum. In each case we find that the observables are related in a simple way to the closed-string tadpole on a disk with appropriate boundary conditions. We give a sketch of an argument that this result should hold in general using the BRST invariance of the closed string two-point function. Finally, we discuss the analogous set of invariants in the Berkovits superstring field theory.

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