Tachyon condensation in cubic superstring field theory

Details Tachyon condensation in cubic superstring field theory Tachyon condensation in cubic superstring field theory

2000-11-14

arxiv.org/abs/hep-th/0011117v3

Nucl.Phys.B638:3-20,2002

Physics

High Energy Physics

High Energy Physics - Theory

19 pages, LaTeX, 3 figures. Eqs. (3.2), (3.3) and (4.6) are corrected, and new gauge fixing condition is used

Scientific paper

10.1016/S0550-3213(02)00472-8

It has been conjectured that at the stationary point of the tachyon potential for the non-BPS D-brane or brane-anti-D-brane pair, the negative energy density cancels the brane tension. We study this conjecture using a cubic superstring field theory with insertion of a double-step inverse picture changing operator. We compute the tachyon potential at levels (1/2,1) and (2,6). In the first case we obtain that the value of the potential at the minimum is 97.5% of the non BPS D-brane tension. Using a special gauge in the second case we get 105.8% of the tension.

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