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arXiv 2412.08056hep-th
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Dabholkar-Park 背景中的反常与 D-branes

Anomalies and D-branes in the Dabholkar-Park background

Hiroki Wada, Satoshi Yamaguchi

AI总结:

本文研究了 Dabholkar-Park 背景中的 D-branes,利用 world-sheet theory 的反常解释了相对 KR-theory 对稳定 D-branes 的分类,并成功构造 D-brane 态以重现其谱。

摘要:

我们考虑 Dabholkar-Park (DP) 背景中的 D-branes,该背景是通过在圆上紧化的 type IIB string theory 中进行规范对称性而获得的 9d orientifold 理论。利用 world-sheet theory 中的反常,我们为通过相对 KR-theory 对稳定 D-branes 的分类提供了物理见解。沿紧化圆缠绕的 D-branes 的性质(如稳定性)可以从 world-sheet 边界上的 1d Majorana fermions 信息中提取。引入这些 Majorana fermions 是为了一致地执行 GSO projection 和 orientifold。我们还在 DP 背景中构造了 D-brane 态。由相对 KR-theory 表征的 D-branes 谱可以从 D-brane 态中正确重现。

英文摘要:

We consider D-branes in the Dabholkar-Park (DP) background, a $9$d orientifold theory obtained by gauging symmetry in the type IIB string theory compactified on a circle. Using anomalies in the world-sheet theory, we provide physical insights into the classification of stable D-branes by relative KR-theory. The nature, such as stability, of D-branes wrapping along the compactified circle can be extracted from information about $1$d Majorana fermions on the boundary of the world-sheet. These Majorana fermions need to be introduced to consistently perform the GSO projection and the orientifold. We also construct D-brane states in the DP background. The spectrum of D-branes characterized by the relative KR-theory is correctly reproduced from the D-brane states.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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