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Tachyon condensation in cubic superstring field theory

I. Ya. Aref'eva·D. M. Belov·A. S. Koshelev·P. B. Medvedev
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Abstract

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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I. Ya. Aref'eva, D. M. Belov, A. S. Koshelev, P. B. Medvedev. 2001-07-23. Tachyon condensation in cubic superstring field theory. https://doi.org/10.1016/s0550-3213(02)00472-8

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