Classical Open String Amplitudes and Boundary String Field Theory
arXiv:1805.07084 · doi:10.1007/JHEP06(2019)086
Abstract
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, 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.
18 pages, 3 figures. Majorly revised version. Introductory section added, figure added, figure 2 replaced, typos corrected. Accepted for puplication in JHEP