AI 中文总结
研究IIB型卡拉比-丘流形定向规范场中多瞬子效应，通过对瞬子零模分析扩展此前结果，揭示新效应，给出具体示例，其双指数抑制可重现观测真空能量，适合实现轴子山顶quintessence。
AI 中文摘要
之前对IIB型卡拉比-丘流形定向规范场中多瞬子的研究发现，当欧几里得D3膜包裹带有威尔逊线的刚性圈时会出现这些效应。在这项工作中，我们通过对瞬子零模的一般分析扩展了这一结果，揭示了对于有变形的刚性圈存在新的多瞬子效应，条件是O3平面位于欧几里得D3膜的世界面上。我们提供了具有明确定向规范对合和膜设置的具体卡拉比-丘示例。其中一个特别适合实现轴子山顶quintessence。特别是，多瞬子效应的双指数抑制允许为基础参数的自然值重现观测到的真空能量。
英文摘要
Previous studies of poly-instantons in type IIB Calabi-Yau orientifolds found that these effects arise when Euclidean D3-branes wrap rigid cycles with a Wilson line. In this work, we extend this result through a general analysis of instanton zero modes, revealing the existence of new poly-instanton effects for rigid cycles with a deformation, provided that O3-planes are localised on the worldvolume of the Euclidean D3-brane. We provide concrete Calabi-Yau examples with explicit orientifold involution and brane setup. One of them is particularly well suited for realising axion hilltop quintessence. In particular, the double exponential suppression of poly-instanton effects allows to reproduce the observed vacuum energy for natural values of the underlying parameters.
Comments34 pages + appendices, 4 figures
