Abstract We review the present status of the experimental and theoretical developments in the field of strangeness in nuclei and neutron stars. We start by discussing the K N interaction, that is governed by the presence of the Λ ( 1405 ) . We continue by showing the two-pole nature of the Λ ( 1405 ) , and the production mechanisms in photon-, pion-, kaon-induced reactions as well as proton–proton collisions, while discussing the formation of K N N bound states. We then move to the theoretical and experimental analysis of the properties of kaons and antikaons in dense nuclear matter, paying a special attention to kaonic atoms and the analysis of strangeness creation and propagation in nuclear collisions. Next, we examine the ϕ meson and the advances in photoproduction, proton-induced and pion-induced reactions, so as to understand its properties in dense matter. Finally, we address the dynamics of hyperons with nucleons and nuclear matter, and the connection to the phases of dense matter with strangeness in the interior of neutron stars.

中文翻译：

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原子核和中子星的奇异性

摘要 我们回顾了原子核和中子星奇异性领域的实验和理论发展现状。我们首先讨论 KN 相互作用，它受 Λ (1405) 的存在支配。我们继续展示 Λ (1405) 的两极性质，以及光子、介子、介子诱导反应以及质子 - 质子碰撞的产生机制，同时讨论 KNN 束缚态的形成。然后，我们转向对致密核物质中 kaons 和 antikaons 性质的理论和实验分析，特别关注 kaonic 原子以及对核碰撞中奇异性产生和传播的分析。接下来，我们检查 ϕ 介子和光产生、质子诱导和 pion 诱导反应的进展，以了解它在致密物质中的性质。最后，我们讨论了具有核子和核物质的超子动力学，以及与中子星内部奇异的稠密物质相的联系。