Oct 17 2006
University of Nevada, Reno研究人员Andrei Derevianko，Kyle Beloy和Ulyana Safronova六个月前坐下来，开始进行计算，这将帮助世界保持更好的时光。与科学家竞争新南威尔士大学, the University team led by associate professor Derevianko conducted research that increased the accuracy of atomic clocks, and they did it without running a single experiment. The team's findings were submitted to one of the most prestigious physics journals, the "Physical Review Letters," and they were published immediately.
"Our findings didn't take a lot of criticism," Derevianko said. "The results are too clear and obvious to be disputed."
在其研究中，大学团队能够隔离并解释了原子钟输出错误的很大一部分。该团队所研究的错误部分现已被切割到其原始大小的五十个。该团队的研究仅基于计算，其中许多是在高性能计算机上进行的。
凯尔·贝洛伊（Kyle Beloy）是该大学物理系的三年级研究生，是该论文的主要作者，其中包含该团队的成绩，他很高兴能在如此著名的发现中发挥作用。大学研究教授Ulyana Safronova也为这些发现做出了贡献。
In 2004, an Italian research team found some convincing evidence that suggested that atomic clocks were less accurate then previously thought. This evidence concerned the scientific community and gave the theory behind atomic clocks renewed international attention.
"It seemed like a good time to reexamine the problem," Derevianko said. "The uncertainty of the issue was a good primer for the research."
原子钟技术基于原子发出固定频率的事实。也可以校准也具有操作频率的激光器，以使其频率与给定原子的频率相匹配。由于原子频率是恒定的，因此将激光与原子同步并计算激光振荡将始终提供稳定的时间测量。
More accurate atomic clocks will lead to improved technologies. Most technical systems that employ satellites, including GPS technology, make use of atomic clocks; these technologies can now operate much more accurately.
新发现也为各种新的科学实验铺平了道路。需要非常准确的测量来估计宇宙的行为。额外的计时精度将使科学家能够探索有关大爆炸理论的假设。改进的技术甚至可能足够准确，可以提供与有争议的理论相关的证据，即通用常数（如电子中的电荷数量）正在发生变化。
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