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arXiv · hep-th/0603152

D-branes and Closed String Field Theory

Yutaka Baba·Nobuyuki Ishibashi·Koichi Murakami
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Abstract

We construct BRST invariant solitonic states in the OSp invariant string field theory for closed bosonic strings. Our construction is a generalization of the one given in the noncritical case. These states are made by using the boundary states for D-branes, and can be regarded as states in which D-branes or ghost D-branes are excited. We calculate the vacuum amplitude in the presence of solitons perturbatively and show that the cylinder amplitude for the D-brane is reproduced. The results imply that these are states with even number of D-branes or ghost D-branes.

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Yutaka Baba, Nobuyuki Ishibashi, Koichi Murakami. 2006-03-31. D-branes and Closed String Field Theory. https://doi.org/10.1088/1126-6708%2F2006%2F05%2F029

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