生日快乐，超冷中子！
Happy Birthday, Ultra-Cold Neutron!
摘要：
是什么推动了宇宙的加速膨胀？我们是否有替代爱因斯坦的宇宙学常数的方法？暗物质是由什么构成的？空间和时间的额外维度存在吗？宇宙中有没有一个更好的框架？左撇子在多大程度上是自然界中的一种偏好对称？宇宙中重子不对称性的起源是什么？这些基本的和开放的问题是通过使用超冷中子的精密实验来解决的。今年，我们庆祝他们的第一个生产50周年，其次是第一个开创性的实验。事实上，超冷中子在同一年被发现了两次，一次在东方，一次在西方。50年来，超冷中子的研究项目为确定自然界基本相互作用的力常数做出了贡献，并且在精确度方面的几项技术突破允许通过实验测试来解决悬而未决的问题。为了纪念这一事件并向这一神话般的物体致敬，我们为具有声学共振跃迁的超冷中子献上一首生日歌，这首歌完全基于超冷中子的性质、中子的惯性质量和引力质量、普朗克常数和局部引力。我们使用的音乐语调系统与其他地方应用和使用的基本记谱法和基本音乐理论无关，但解决了音乐理论的两个基本问题，即音乐会音高的参考问题和语调问题。
英文摘要：
What is driving the accelerated expansion of the universe and do we have an alternative for Einstein's cosmological constant? What is dark matter made of? Do extra dimensions of space and time exist? Is there a preferred frame in the universe? To which extent is left-handedness a preferred symmetry in nature? What's the origin of the baryon asymmetry in the universe? These fundamental and open questions are addressed by precision experiments using ultra-cold neutrons. This year, we celebrate the 50th anniversary of their first production, followed by first pioneering experiments. Actually, ultra-cold neutrons were discovered twice in the same year, once in the eastern and once in the western world. For five decades now research projects with ultra-cold neutrons have contributed to the determination of the force constants of nature's fundamental interactions, and several technological breakthroughs in precision allow to address the open questions by putting them to experimental test. To mark the event and tribute to this fabulous object, we present a birthday song for ultra-cold neutrons with acoustic resonant transitions, which are based solely on properties of ultra-cold neutrons, the inertial and gravitational mass of the neutron, Planck's constant, and the local gravity. We make use of a musical intonation system that bears no relation to basic notation and basic musical theory as applied and used elsewhere but addresses two fundamental problems of music theory, the problem of reference for the concert pitch and the problem of intonation.
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。
