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<p>In this work, we develop a tool to study string perturbation theory of the Klebanov-Strassler solution in the large radius approximation based on open-closed superstring field theory. Combining the large radius expansion and a double scaling limit, we find a perturbative background solution of open-closed superstring field theory that corresponds to the Klebanov-Strassler solution. To illustrate the utilities of this approach, we break the supersymmetry of the background by placing a stack of anti-D3-branes at the tip of the throat without invoking S-duality. We highlight how our solutions qualitatively differ from the study of Kachru-Pearson-Verlinde, which studied S-dualized anti-D3-brane in the KS background. We then find a perturbative open string background solution to the third order in the large radius approximation. The perturbative background solution to the open string field theory we found is expected to be dual to a D5-brane probing the KS solution.</p>

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String perturbation theory of Klebanov-Strassler throat

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年5月28日

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  • Manki Kim

摘要

In this work, we develop a tool to study string perturbation theory of the Klebanov-Strassler solution in the large radius approximation based on open-closed superstring field theory. Combining the large radius expansion and a double scaling limit, we find a perturbative background solution of open-closed superstring field theory that corresponds to the Klebanov-Strassler solution. To illustrate the utilities of this approach, we break the supersymmetry of the background by placing a stack of anti-D3-branes at the tip of the throat without invoking S-duality. We highlight how our solutions qualitatively differ from the study of Kachru-Pearson-Verlinde, which studied S-dualized anti-D3-brane in the KS background. We then find a perturbative open string background solution to the third order in the large radius approximation. The perturbative background solution to the open string field theory we found is expected to be dual to a D5-brane probing the KS solution.