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

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).

11 pages, latex. A new section has been added to clarify the misinterpretation of the early result. Typos and minor corrections. To appear in Phys. Lett. B

References in corpus (1)

• Brane-Antibrane Action from Boundary String Field Theory

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• Brane-Antibrane Systems at Finite Temperature and Phase Transition near the Hagedorn Temperature
• Non-orientable Boundary Superstring Field theory with Tachyon field
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• The Boundary State Formalism and Conformal Invariance in Off-shell String Theory
• On open-closed extension of boundary string field theory