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arXiv 2605.03005hep-th
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瞬子修正的无限距离极限分类

Taxonomy of Instanton Corrections in Infinite Distance Limits

Max-Planck-Institut für Physik (Werner-Heisenberg-Institut)(马克斯·普朗克物理研究所);Fakultät für Physik, Ludwig-Maximilians-Universität München(慕尼黑大学物理学院)

Manuel Artime, Ralph Blumenhagen, Panagiotis Leivadaros

AI总结:

通过BPS保护的高阶R⁴项分析无限距离极限中瞬子修正的生成机制,发现Schwinger积分能精确捕捉作用在特定范围内的瞬子贡献,该范围由引力截断和最轻塔质量比决定。

摘要:

利用BPS保护的高阶R⁴项作为可解例子,我们分析了在模空间无限距离极限中,通过一阶Schwinger积分对轻塔状态进行积分时生成的瞬子修正。发现Schwinger积分能精确捕捉作用在参数范围(Λ_sp/M_light)^{-1} ≤ S_inst ≤ Λ_sp/M_light内的瞬子。该结论通过考虑八维扭折紧化模空间及七维极限得到支持。在每种情况下,通过Schwinger积分消除轻塔能重现上述范围内的瞬子完整贡献。进一步将该提议转换为分类方法,从而确定与任意无限距离极限相关的涌现瞬子谱。

英文摘要:

Using the BPS-protected higher derivative $R^4$-term as an exactly solvable example, we analyze which instanton corrections are generated by a one-loop Schwinger integral over the light towers of states that arise in infinite distance limits in moduli space. We find that the Schwinger integral fully captures precisely those instantons whose action lies parametrically in the window $(Λ_{\rm sp}/M_{\rm light})^{-1}\le {\rm S}_{\rm inst}\le Λ_{\rm sp}/M_{\rm light}$, that is, instantons whose action is bounded by the ratio of the gravity cutoff and the mass scale of the lightest tower. This proposal is supported by considering the entire moduli space of toroidal compactifications in eight dimensions, together with a number of limits in seven dimensions. In each case, integrating out the light towers via the Schwinger integral reproduces the complete contribution of the instantons within the above window. We further recast the proposal in terms of the taxonomy classification, allowing us to determine the emergent instantonic spectrum associated with any infinite distance limit.

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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