The weak gravity conjecture holds that in a theory of quantum gravity any gauge force must mediate interactions stronger than gravity for some particles. This statement has surprisingly deep and extensive connections to many different areas of physics and mathematics. Several variations on the basic conjecture have been proposed, including statements that are much stronger but are nonetheless satisfied by all known consistent quantum gravity theories. These related conjectures and the evidence for their validity in the string theory landscape are reviewed. Also reviewed are a variety of arguments for these conjectures, which tend to fall into two categories: qualitative arguments that claim the conjecture is plausible based on general principles and quantitative arguments for various special cases or analogs of the conjecture. The implications of these conjectures for particle physics, cosmology, general relativity, and mathematics are also outlined. Finally, important directions for future research are highlighted.

中文翻译：

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弱引力猜想

弱引力猜想认为，在量子引力理论中，对于某些粒子来说，任何规范力都必须介导比引力更强的相互作用。这个陈述与物理和数学的许多不同领域有着令人惊讶的深刻和广泛的联系。人们已经提出了基本猜想的几种变体，包括更强的陈述，但仍然被所有已知的一致量子引力理论所满足。回顾了这些相关的猜想及其在弦理论领域的有效性的证据。还回顾了这些猜想的各种论证，它们往往分为两类：基于一般原理声称猜想合理的定性论证和针对各种特殊情况或猜想的类似物的定量论证。还概述了这些猜想对粒子物理学、宇宙学、广义相对论和数学的影响。最后，强调了未来研究的重要方向。