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One-loop Correction of the Tachyon Action in Boundary Superstring Field Theory

Mohsen Alishahiha
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Abstract

We compute one-loop correction to the string field theory action of the tachyon for unstable D-branes in the framework of the boundary superstring field theory. We would expect that the one-loop correction comes from the partition function of the two-dimensional world-sheet theory on the annulus. The annulus correction suggests that the genus expansion is, somehow, governed by the effective string coupling defined in terms of the tachyon λ=g_s exp(-T^2/4).

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Mohsen Alishahiha. 2001-05-08. One-loop Correction of the Tachyon Action in Boundary Superstring Field Theory. https://doi.org/10.1016/s0370-2693(01)00596-2

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