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Analytic solution for tachyon condensation in Berkovits’ open superstring field theory

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Abstract

We present an analytic solution for tachyon condensation on a non-BPS D-brane in Berkovits’ open superstring field theory. The solution is presented as a product of 2 × 2 matrices in two distinct GL 2 subgroups of the open string star algebra. All string fields needed for computation of the nonpolynomial action can be derived in closed form, and the action produces the expected non-BPS D-brane tension in accordance with Sen’s conjecture. We also comment on how D-brane charges may be encoded in the topology of the tachyon vacuum gauge orbit.

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  1. Institute of Physics of the ASCR, v.v.i., Na Slovance 2, 182 21, Prague 8, Czech Republic

    Theodore Erler

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Erler, T. Analytic solution for tachyon condensation in Berkovits’ open superstring field theory. J. High Energ. Phys. 2013, 7 (2013). https://doi.org/10.1007/JHEP11(2013)007

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