Open String Fields as Matrices
arXiv:1412.4855 · doi:10.1093/ptep/ptv023
Abstract
We show that the action expanded around Erler-Maccaferri's N D-brane solution describes the N+1 D-brane system where one D-brane disappears due to tachyon condensation. String fields on multi-branes can be regarded as block matrices of a string field on a single D-brane in the same way as matrix theories.
9 pages; v2: adding one paragraph about overlaps and minor corrections; v3: final version