对观察到金属氢的Wigner-Huntington跃迁的评论
Comment on Observation of the Wigner-Huntington transition to metallic hydrogen
摘要：
Dias和Silvera（DS）最近的一篇论文报道了在5.5和83 K下在495 GPa下在金刚石压砧单元中产生金属氢。这一结果对能源和火箭技术具有重要影响。在这里，我们认为，所提出的（非常稀缺）的结果是矛盾的实验描述，使他们的主张不支持实验。此外，所提出的影响是高度投机性的，使这篇论文对广大读者来说非常混乱。阐明的索赔和相关的影响是重要的，建立一个连贯的画面，目前正在出现的结果，在各个层次的理论计算和实验研究，采用静态和动态压缩技术。毫无疑问，氢在高压下金属化。但这并不意味着所有关于立即达到这种状态的说法都是有效的。科学界希望了解氢在什么条件下金属化，导电状态的性质及其特性（例如超导性）。在这里，我们认为，所提供的数据并没有提供任何可靠的信息。
英文摘要：
A recent paper of Dias and Silvera (DS) reports on production of metallic hydrogen in a diamond anvil cell at 495 GPa at 5.5 and 83 K. The results are implied to have a great impact on energy and rocketry. Here we argue that the presented (very scarce) results are contradictory with the presented experimental description making their claims unsupported experimentally. Moreover, the proposed implications are highly speculative making this paper very confusing for a broad audience. Elucidating the claims and the related implications is important for building a coherent picture that is currently emerging as the results of theoretical calculations at various levels and experimental investigations employing static and dynamic compression techniques. There is no doubt that hydrogen metallizes at high pressures. But this does not make all claims about reaching this state immediately valid. Scientific community would like to learn at what conditions hydrogen metallizes, what is the nature of the conducting state and its properties (e.g. superconductivity). Here we argue that the presented data do not provide any reliable information on this.
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