Normalization of the background independent open string field theory action

Ghoshal, Debashis; Sen, Ashoke

doi:10.1088/1126-6708/2000/11/021

Cited by 62 publications

(69 citation statements)

References 19 publications

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“…While complete analytic solutions of the equations of motion of this string field theory are still missing, the solutions found by combination of analytic and numerical work gave some of the strongest evidence for the conjectures, as well as demonstrated that string field theory contains non-perturbative physics. More recently, work in boundary string field theory (B-SFT) [42,43,44,45,46,47], − a version of string field theory incorporating a certain degree of background independence, − confirmed the form of the tachyon potentials proposed in [37,38] and established conclusively the energetics aspect of the tachyon conjectures [31,32,33]. Whereas in conventional SFT the tachyon string field condenses, namely an infinite number of scalars acquire expectation values, in B-SFT only the tachyon field acquires a vacuum expectation value.…”

Section: Introductionmentioning

confidence: 95%

String field theory around the tachyon vacuum

Rastelli¹,

Sen²,

Zwiebach³

2001

Advances in Theoretical and Mathematical Physics

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180

362

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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 the absence of open string dynamics around this vacuum. We test this proposal by showing the existence of lump solutions of arbitrary codimension in this string field theory. The key ingredients in this analysis are certain assumptions about the analyticity properties of tachyon Green's functions. With the help of some further assumptions about the properties of these Green's functions, we also calculate the ratios of tensions of lump solutions of different dimensions. The result is in perfect agreement with the known answers for the ratios of tensions of D-branes of different dimensions.

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Section: Introductionmentioning

confidence: 95%

String field theory around the tachyon vacuum

Rastelli¹,

Sen²,

Zwiebach³

2001

Advances in Theoretical and Mathematical Physics

Self Cite

180

362

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“…If the spectrum in the presence of u-background.is not significantly niodified ,the divergences in (39) will come only from a finite number of the first excited states, i.e. the ground state with energy Ecas(u/T) and possibly some number of the low lying excited states.…”

Section: Open String Channelmentioning

confidence: 99%

“…the BSFT in its spirit is very SImilar to the old sigma model approach (see [21], [22] for a review and [23] for a recent discussion). The picture of taclwon conden!3ation in bosonic BSFT (as well as the BSFT itself) was further developed in [~6], ; [39], [37]; [40], [41], [38].…”

Section: Introductionmentioning

confidence: 99%

One loop partition function in the presence of tachyon background and corrections to tachyon condensation

Bardakci

Konechny

2001

Nuclear Physics B

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We compute theone-loop partition function for quadratic tachyon background in open string theory. Both closed and open string representations are developed. Using these representations we study the one-loop divergences in the partition function in the presence of the tachyon background~ The divergences due to the open and closed string tachyons are treated by analytic continuation in the tachyon· mass squared. We pay particular attention to the imaginary part of the analytically continued expressions. The last one gives the decay rate of the unstable vacuum. The dilaton tadpole is also given some partial consideration. The partition function is further used to study corrections to tachyon condensation processes describing branedescent relations. Assuming the boundary string field theory prescription for construction of the string field action via partition function holds at one loop level we study the one-loop corrections to the tachyon potential and to the tensions of lower-dimensional branes.

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“…These conjectures have been studied using string field theory both in the background independent formulation [5][6][7][8][9] as well as in the cubic string field theory [10] using the level truncation scheme [11][12][13][14]. Strong evidence in support of these conjectures is now available [15][16][17][18][19][20] due to these results.…”

Section: Introductionmentioning

confidence: 91%

Stable solitons in field theory models for tachyon condensation

Jatkar

Vathsan

2001

J. High Energy Phys.

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We study soliton solutions in scalar field theory with a variety of unbounded potentials. A subset of these potentials have Gaussian lump solutions and their fluctuation spectrum is governed by the harmonic oscillator problem. These lumps are unstable with one tachyonic mode. Soliton solutions in several other classes of potentials are stable and are of kink type. The problem of the stability of these solutions is related to a supersymmetric quantum mechanics problem. The fluctuation spectrum is not equispaced and does not contain any tachyonic mode. The lowest energy mode is the massless Goldstone mode which restores broken translation invariance.

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Normalization of the background independent open string field theory action

Cited by 62 publications

References 19 publications

String field theory around the tachyon vacuum

String field theory around the tachyon vacuum

One loop partition function in the presence of tachyon background and corrections to tachyon condensation

Stable solitons in field theory models for tachyon condensation

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