%0 Journal Article
%T Fundamental Strings in Open String Theory at the Tachyonic Vacuum
%A Ashoke Sen
%J Mathematics
%D 2000
%I arXiv
%R 10.1063/1.1377037
%X We show that the world-volume theory on a D-p-brane at the tachyonic vacuum has solitonic string solutions whose dynamics is governed by the Nambu-Goto action of a string moving in (25+1) dimensional space-time. This provides strong evidence for the conjecture that at this vacuum the full (25+1) dimensional Poincare invariance is restored. We also use this result to argue that the open string field theory at the tachyonic vacuum must contain closed string excitations.
%U http://arxiv.org/abs/hep-th/0010240v2