D-Branes as Unstable Lumps in Bosonic Open String Field Theory
نویسندگان
چکیده
We construct Dp-branes in bosonic string theory as unstable lumps in a truncated string field theory of open strings on a D25-brane. We find that the lowest level truncation gives good quantitative agreement with the predicted D-brane tension and low-lying spectrum of the D-brane for sufficiently large p and study the effect of the next level corrections for p = 24. We show that a U(1) gauge field zero mode on the D-brane arises through a mechanism reminiscent of the Randall-Sundrum mechanism for gravity.
منابع مشابه
A Note on D - Branes of Odd Codimensions
On a noncommutative space of rank-1, we construct a codimension-one soliton explicitly and, in the context of noncommutative bosonic open string field theory, identify it with the D24-brane. We compute the tension of the proposed D24-brane, yielding an exact value and show that it is related to the tension of the co-dimension two D23-brane by the string T-duality. This resolves a puzzle posed b...
متن کاملD-brane effective field theory from string field theory
Open string field theory is considered as a tool for deriving the effective action for the massless or tachyonic fields living on D-branes. Some simple calculations are performed in open bosonic string field theory which validate this approach. The level truncation method is used to calculate successive approximations to the quartic terms φ4, (AAμ) 2 and [Aμ, Aν ] 2 for the zero momentum tachyo...
متن کاملNoncommutative Solitons and Intersecting D-Branes
Brane configurations that contain a tachyonic mode are unstable and will decay. The decay modes vary depending on the unstable D-brane configurations involved ~see the reviews @1–3#!. In bosonic string theory, all D-branes are unstable. The tachyon on the brane may condense to solitonic solutions of the open string tachyon field theory. These solitons have been noted to correspond to lower dime...
متن کاملLectures on D - branes , tachyon condensation , and string field theory
These lectures provide an introduction to the subject of tachyon condensation in the open bosonic string. The problem of tachyon condensation is first described in the context of the low-energy Yang-Mills description of a system of multiple D-branes, and then using the language of string field theory. An introduction is given to Witten's cubic open bosonic string field theory. The Sen conjectur...
متن کاملD - Branes , Tachyons , and String Field Theory
In these notes we provide a pedagogical introduction to the subject of tachyon condensation in Witten's cubic bosonic open string field theory. We use both the low-energy Yang-Mills description and the language of string field theory to explain the problem of tachyon condensation on unstable D-branes. We give a self-contained introduction to open string field theory using both conformal field t...
متن کامل