Tachyon condensation in superstring field theory
By N. Berkovits, Ashoke Sen, B. Zwiebach. 2000
254 citations recorded by the source corpus.
Abstract It has been conjectured that at the stationary point of the tachyon potential for the D-brane–anti-D-brane pair or for the non-BPS D-brane of superstring theories, the negative energy density cancels the brane tensions. We study this conjecture using a Wess–Zumino–Witten-like open superstring field theory free of contact term divergences and recently shown to give 60% of the vacuum energy by condensation of the tachyon field alone. While the action is non-polynomial, the multiscalar tachyon potential to any fixed level involves only a finite number of interactions. We compute this potential to level three, obtaining 85% of the expected vacuum energy, a result consistent with convergence that can also be viewed as a successful test of the string field theory. The resulting effective tachyon potential is bounded below and has two degenerate global minima. We calculate the energy density of the kink solution interpolating between these minima finding good agreement with the tension of the D-brane of one lower dimension.
Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/edc65be903d45a7554b4da5ec6c3fdaad2a2d38f
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Citations in the corpus
- Brane interaction as the origin of inflation (2002, background): “The tachyon potential, VT , can been calculated by various means [23, 24, 25]: • The result from level truncated cubic string field theory [23, 24] gives a tachyon mass2 which agrees with that of the NS open string tachyon, − 1 2α [6]; this is the mass of the perturbative state which appears in the ”
- T-duality and actions for non-BPS D-branes (2000, background): “In this respect it would be interesting to calculate the explicit form of the (∂T )4 contribution to the 4-tachyon amplitude2.”
- A Review on Tachyon Condensation in Open String Field Theories (2001, unknown): “We will quote the results at level ((3) 2 , 3) [62] and at level (2,4) [63, 64].”
- D-branes as tachyon lumps in string field theory (2000, unknown): “Table of Contents”
- Noncommutative Tachyons And String Field Theory (2000, methodology): “It has been explored numerically [9,11,12] but is not known in closed form; we merely write it as A0 = (”
- String Field Theory Around the Tachyon Vacuum (2000, methodology): “Another important problem is to generalize this analysis to the case of superstring field theory (SSFT) [55, 56, 57] where analogous conjectures exist [58, 59, 60, 61, 62, 63] and some have already been tested using the level truncation scheme [64, 65 , 66, 67].”
- Proposal for non-Bogomol???nyi-Prasad-Sommerfield D-brane action (2000, methodology): “We have modified the action given above to the action (2.7) in order to get smooth tachyon kink solution [ 11 ].”
- On the relevance of tachyons (2000, methodology): “In particular, why do calculations in the level-truncated string field theory [1,10,11,14,15] converge so rapidly to the right answer for the vacuum energy? We close with some speculations in this regard.”
- Brane-antibrane action from boundary string field theory (2000, methodology): “Historically the most famous string field theory-Witten’s cubic string field theoryhas been mainly used to compute the tachyon potential of bosonic branes, non BPS branes and brane-antibranes by the approximation which is called the level truncation (for example see [12]).”
- D-branes and strings as non-commutative solitons (2000, background): “[4,5,6, 7 ], and renormalization group analysis of relevant boundary perturbations [8] all”