瞬子相互作用与轴子弱引力猜想
Instanton Interactions and the Axion Weak Gravity Conjecture
- Department of Physics, Ben-Gurion University of the Negev（内盖夫本-古里安大学物理系）
机构由 AI 辅助整理，请以论文原文为准。
AI总结：
本文通过长程瞬子相互作用提出排斥性轴子弱引力猜想，该猜想对瞬子作用量施加界限，在紫外完备例子中蕴含并强于通常表述，且指出无质量标量场缺失时轴子衰变常数界限可能改变。
AI中文摘要：
弱引力猜想允许一种以长程带电粒子自相互作用为排斥性的表述形式。我们采用类似的方法来处理轴子弱引力猜想，通过考虑长程瞬子相互作用。在瞬子间距的首阶近似下，这类相互作用完全由无质量标量场介导。引力相互作用和规范相互作用是次主导的。我们提出了一个排斥性相互作用的轴子弱引力猜想，该猜想对复欧几里得瞬子作用量的标量场依赖性形成了一个界限。我们证明，在标准的紫外完备例子中，这个界限蕴含了轴子弱引力猜想的通常表述，并且通常更强。由于这一表述纯粹是关于无质量标量场的陈述，它意味着在没有无质量标量场的情况下，轴子衰变常数的通常界限可能会被修改。
英文摘要：
The Weak Gravity Conjecture admits a formulation in terms of long-range charged particle self-interactions being repulsive. We adopt a similar approach to the Axionic Weak Gravity Conjecture by considering long-range instanton interactions. At leading order, in the instanton separation, such interactions are mediated purely by massless scalar fields. Gravitational and gauge interactions are sub-leading. We formulate a repulsive interaction Axionic Weak Gravity Conjecture, which forms a bound on the scalar field dependence of the complex Euclidean instanton action. We show that in standard ultraviolet complete examples, this bound implies the usual formulation of the Axionic Weak Gravity Conjecture, while generally being stronger. Because this formulation is purely a statement about massless scalar fields, it implies that in the absence of massless scalars the usual bound on the axion decay constant could be modified.
