Some exact results on tachyon condensation in string field theory

@article{Kutasov2000SomeER,
  title={Some exact results on tachyon condensation in string field theory},
  author={David Kutasov and Marcos Mari{\~n}o and Gregory Moore},
  journal={Journal of High Energy Physics},
  year={2000},
  volume={2000},
  pages={045-045}
}
The study of open string tachyon condensation in string field theory can be drastically simplified by making an appropriate choice of coordinates on the space of string fields. We show that a very natural coordinate system is suggested by the connection between the worldsheet renormalization group and spacetime physics. In this system only one field, the tachyon, condenses while all other fields have vanishing expectation values. These coordinates are also well-suited to the study of D-branes… Expand
Tachyon condensation in large magnetic fields with background independent string field theory
Abstract We discuss the problem of tachyon condensation in the framework of background independent open string field theory. We show, in particular, that the computation of the string field theoryExpand
A Review on Tachyon Condensation in Open String Field Theories
We review the recent studies of tachyon condensation in string field theory. After introducing the open string field theory both for bosonic string and for superstring, we use them to examine theExpand
String Field Theory Around the Tachyon Vacuum
Assuming that around the tachyon vacuum the kinetic term of cubic open string field theory is made purely of ghost operators we are led to gauge invariant actions which manifestly implement theExpand
Lectures 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-energyExpand
Analytic solution for tachyon condensation in open string field theory
We propose a new basis in Witten’s open string field theory, in which the star product simplifies considerably. For a convenient choice of gauge the classical string field equation of motion yieldsExpand
Lectures 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-energyExpand
Normalization of the background independent open string field theory action
It has been shown recently that the background independent open string field theory provides an exact description of the tachyon condensation on unstable D-branes of bosonic string theory. In thisExpand
Worldsheet Description of Tachyon Condensation in Open String Theory
In this thesis we review the fundamental framework of boundary string field theory (BSFT) and apply it to the tachyon condensation on non-BPS systems in the superstring theory. The boundary stringExpand
Tachyon Condensation: Calculations in String Field Theory
In this Ph.D. thesis, we study tachyon condensation in string field theories. In chapter 2, we review Witten's bosonic string field theory and calculate the tachyon potential. In chapter 3, weExpand
Tachyon condensation at one loop
Using boundary string field theory we study the decay of unstable D-branes to lower dimensional D-branes via the tachyon condensation at one loop level. We analyze one loop divergences and use theExpand
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 30 REFERENCES
Tachyon condensation in string field theory
It has been conjectured that at a stationary point of the tachyon potential for the D-brane of bosonic string theory, the negative energy density exactly cancels the D-brane tension. We evaluate thisExpand
On Exact Tachyon Potential in Open String Field Theory
In these notes we revisit the tachyon lagrangian in the open string field theory using background independent approach of Witten from 1992. We claim that the tree level lagrangian (up to second orderExpand
Level truncation and the tachyon in open bosonic string field theory
The tachyonic instability of the open bosonic string is analyzed using the level truncation approach to string field theory. We have calculated all terms in the cubic action of the string fieldExpand
Level truncation and the tachyon in open bosonic string field theory
The tachyonic instability of the open bosonic string is analyzed using the level truncation approach to string field theory. We have calculated all terms in the cubic action of the string fieldExpand
On a nonperturbative vacuum for the open bosonic string
Abstract In the context of covariant string field theory, we investigate the existence and properties of nonperturbative vacua for the open bosonic string. The study is performed using successiveExpand
Some computations in background-independent off-shell string theory.
  • Witten
  • Physics, Medicine
  • Physical review. D, Particles and fields
  • 1993
TLDR
From the computation it emerges that, although the string field action does not coincide with the world-sheet (matter) partition function in general, these functions do coincide on shell and this can be demonstrated in general. Expand
Lumps and p-branes in open string field theory
Abstract We describe numerical methods for constructing lump solutions in open string field theory. According to Sen, these lumps represent lower dimensional Dp branes and numerical evaluation ofExpand
Field theory models for tachyon and gauge field string dynamics
In hep-th/0008227, the unstable lump solution of 3 theory was shown to have a spectrum governed by the solvable Schroedinger equation with the l = 3 reflectionless potential and was used as a modelExpand
String field theory on the conformal plane (I).: Kinematical Principles
We formulate string field theory geometrically by writing each term in the field theory action. as an expectation value in the 2-dimensional conformal field theory on the world surface. We show howExpand
Role of short distance behavior in off-shell open-string field theory.
  • Li, Witten
  • Physics, Medicine
  • Physical review. D, Particles and fields
  • 1993
TLDR
It is shown that renormalization of the boundary couplings makes both the world-sheet partition function and the string fieldaction finite and cutoff independent, although the resulting string field action has an unpalatable dependence on the leading unrenormalizable coupling. Expand
...
1
2
3
...