Fundamental Strings in Open String Theory at the Tachyonic Vacuum
نویسنده
چکیده
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 NambuGoto 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. 1 [email protected], [email protected] Formerly Mehta Research Institute of Mathematics & Mathematical Physics
منابع مشابه
ar X iv : h ep - t h / 02 03 18 5 v 2 2 5 M ar 2 00 2 Interpolating between open and closed strings – a BSFT approach
We address the conjecture that at the tachyonic vacuum open strings get transformed into closed strings. We show that it is possible in the context of boundary string field theory to interpolate between the conventional open string theory, characterized by having the D25 brane as the boundary state, and an off-shell (open) string theory where the boundary state is identified with the closed str...
متن کاملar X iv : h ep - t h / 02 03 18 5 v 3 2 7 M ay 2 00 2 Interpolating between open and closed strings – a BSFT approach
We address the conjecture that at the tachyonic vacuum open strings get transformed into closed strings. We show that it is possible in the context of boundary string field theory to interpolate between the conventional open string theory, characterized by having the D25 brane as the boundary state, and an off-shell (open) string theory where the boundary state is identified with the closed str...
متن کامل00 2 Interpolating between open and closed strings – a BSFT approach
We address the conjecture that at the tachyonic vacuum open strings get transformed into closed strings. We show that it is possible in the context of boundary string field theory to interpolate between the conventional open string theory, characterized by having the D25 brane as the boundary state, and an off-shell (open) string theory where the boundary state is identified with the closed str...
متن کاملFundamental strings and NS5-branes from unstable D-branes in supergravity
By using the non-supersymmetric p-brane solutions delocalized in arbitrary number of transverse directions in type II supergravities, we show how they can be regarded as interpolating solutions between unstable Dp-branes (a non-BPS D-brane or a pair of coincident D-brane-antiD-brane) and fundamental strings and also between unstable Dp-branes and NS5-branes. We also show that some of these solu...
متن کامل4 v 1 1 6 Se p 20 03 GEF - TH - 9 - 2003 Physical States at the Tachyonic Vacuum of Open String Field Theory
We illustrate a method for computing the number of physical states of open string theory at the stable tachyonic vacuum in level trun-cation approximation. The method is based on the analysis of the gauge-fixed open string field theory quadratic action that includes Fadeev-Popov ghost string fields. Computations up to level 9 in the scalar sector are consistent with Sen's conjecture about the a...
متن کامل