D-branes as tachyon lumps in string field theory
By Nicolas Moeller, Ashoke Sen, B. Zwiebach. 2000
172 citations recorded by the source corpus.
It has been conjectured that the tachyonic lump solution of the open bosonic string field theory describing a D-brane represents a D-brane of one lower dimension. We place the lump on a circle of finite radius and develop a variant of the level expansion scheme that allows systematic account of all higher derivative terms in the string field theory action, and gives a calculational scheme that can be carried to arbitrary accuracy. Using this approach we obtain lump masses that agree with expected D-brane masses to an accuracy of about 1%. We find convincing evidence that in string field theory the lump representing a D-brane is an extended object with a definite profile. A gaussian fit to the lump gives a 6-sigma size of 9.3√α'. The level truncation scheme developed here naturally gives rise to an infrared and ultraviolet cut-off, and may be useful in the study of quantum string field theory.
Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/4b76da3be0174b4468861343ada3b4ca9e47d67e
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Citations in the corpus
- Rolling Tachyon (2002, background): “…the fact that the string field theory action contains infinite number of time derivatives, and hence it is not a priori clear how to set up the initial value problem, the theory contains a family of time dependent solutions characterized by the initial position and velocity of the tachyon field.”
- A Review on Tachyon Condensation in Open String Field Theories (2001, unknown): “In [68], the following values are chosen,”
- String Field Theory Around the Tachyon Vacuum (2000, methodology): “As in [ 14 ], in order to implement systematically the level truncation scheme we compactify the direction X on a circle of radius R. For each zero momentum state |�ii that we had before, we obtain a tower of Fourier modes |�i,ni , n = 0,1,2 . . ., of momentum p = n/R along the X direction.”
- Boundary CFT construction of D-branes in vacuum string field theory (2001, methodology): “Although the results are very impressive, they ultimately rely on numerical study of the solutions of the equations of motion using the level truncation scheme [5, 6, 7, 8, 9, 10 , 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24].”
- Classical solutions in string field theory around the tachyon vacuum (2001, methodology): “Cubic open string field theory [1] has turned out to be a powerful tool in studying various conjectures [2, 3] about tachyon condensation on bosonic D-branes [4, 5, 6, 7, 8, 9 , 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21].”
- Analytic solution for tachyon condensation in open string field theory (2005, background): “The second conjecture was tested in a number of interesting papers starting with [21, 22, 23] and the third one in [24, 25, 26].”
- Proof of vanishing cohomology at the tachyon vacuum (2006, background): “Starting from perturbative vacuum on the D25-brane, one can find classical solutions to the equations of motion representing lower-dimensional branes [4, 5, 6] as well as the tachyon vacuum [7, 8, 9, 10], in which there are no branes present.”