2018/05/31 by Christoph Chiaffrino, Ivo Sachs
Physics and Astronomy · #hep-th
paper · pdf · doi:10.1007/jhep06(2019)086
18 pages, 3 figures. Majorly revised version. Introductory section added, figure added, figure 2 replaced, typos corrected. Accepted for puplication in JHEP
arxiv created 2019/06/09 · arxiv updated 2019/07/24
Abstract: We show that boundary string field theory realizes the minimal model of open string field theory. More precisely, we observe that the expansion of the (co)homological vector field, Q of boundary string field theory in the cohomology of its linear part reproduces the S-matrices of perturbative string theory. In mathematical terms, boundary string field theory realizes the minimal model map of the cohomological perturbation lemma.