博客李淼

长夏漫漫，自从上个月狠狠地热闹了一下，物理似乎也开始休假，没有看到什么新闻，arXiv上的“帖子”也了无新意。

不如来展望一下LHC的未来。我记得去年上半年在杭州遇到Mike Douglas，问他打算做什么，他说打算去CERN待半年，学点加速器物理。我跟他说我的重点是宇宙学，他说：当然，either way。最近在科大遇到一个做弦论的印度人，他说他也打算做LHC相关的物理了。

记得我们在这里聊过LHC会发现什么。除了Higgs（他老人家会很奇怪，他早就存在了，还等什么发现），估计就是SUSY了，比Higgs老人家要性感得多的美女。我们看看其他人是怎么说的（这些早就被别的博客讨论过了，我们晚点也没事）：

Lisa Randall: The magnificent thing is that we know there should be an answer to the question of the weakness of gravity, and that it should be revealed at the LHC.

（我估计所谓引力为什么弱的机制指的是Randall-Sundrum机制，Randall的预言够大胆。她的未来就赌在这个上面了，《我把青春献给你》，估计这样说不过分。）

Leon Lederman: The long-simmering concern over the weakness of Einstein’s gravity may well be confronted. However, what is for sure is that the LHC, with its awesome reach, will answer all of our current astro-particle problems…

（K介子、中微子、底夸克的发现者有权利预言任何事情。看来他比Randall要谨慎地乐观。经过漫长的《岁月随想》，他有理由乐观。）

Alexander Vilenkin: If no trace of supersymmetry is found, this would be - necessarily indirect - evidence for the existence of the multiverse.

（Randall至少还发明了一个机制，Vilenkin则发明了不用机制的机制，没有理由的理由。）

Sir Martin Rees: I’m hoping that it will clarify the nature of the particles that constitute the “dark matter” in the universe.

（我很同情Astronomer Royal。）

Edward Witten: The LHC wil tell us whether this notion [electroweak symmetry breaking] is correct, and if so how it works.

（Witten是最悲观的，希望他是错的。虽然Witten一生研究的理论最hypothetical，在LHC的预言上，他的确Hypotheses non fingo。）

Max Tegmark: Our theory of particle physics has 26 pure numbers in it. Why do they have these particular values? How did the universe begin? Did it?

（Tegmark有很多fantasies。）

Leonard Susskind: I see only two possible outcomes of the LHC project - either there will be low energy supersymmetry or there won’t. … the big question is whether the gauge hierarchy fine-tuning is similar to the cosmological constant fine-tuning, or if it has a more conventional supersymmetric explanation.

(Lenny认为打破了SUSY，我们失去的是锁链，得到的是无限小的宇宙学常数，他现在过的是《我的无产阶级生活》。）

Steven Weinberg: What terrifies theorists is that the LHC may discover nothing beyond the single neutral “Higgs” particle.. We fervently hope for some complicated discoveries.

（他以前就担心过CMB功率谱是纯粹的标度不变谱，看来他的担心是多余的，这次可能还是多余的。）

John Schwarz: There are many speculative ideas for possible discoveries at the LHC. These include indications of extra dimensions, black holes, strings, magnetic monopoles, etc. I believe that all of these exist, and I would be thrilled to have experimental confirmation - but I am pessimistic about the prospects for finding them in the LHC’s energy range… I could be wrong. That’s why it is important that these experiments be carried out.

（John很保守，不过他说了他可能是错的。Feynman也说过弦论不可能是正确的，他也同时说他可能是错的。）

Sean Carroll: The beauty of science is that we don’t know what surprises may await us in these domains.

（左派是最狡猾的，所以是永远正确的。）

Gordon Kane: The LHC could discover the superpartners in a supersymmetric world. In addition to strong theoretical evidence for Higgs physics, there is strong experimental evidence that Higgs particles do exist with a mass implied by supersymmetry… Probably the main thing we have learned in the past two decades is that any understanding of nature at the most fundamental level (beyond a description) will require extending our thinking to embed our world in extra dimensions… An optimist (like me) can make the defendable argument that the LHC could test supersymmetry, establish string theory and move on to the remaining “why” questions.

（这是目前最乐观的，朱军说《时刻准备着》。）

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唱罢球歌唱诗歌

好久没有去天涯了，世界杯结束了，月怀玉也写了很多词。我是她的粉丝，就叫月饼吧。觉得这首最好，还是她最喜欢用的韵：

蝶恋花–咏莲寄南华与小眉
　　
紫萼莲花星夜破。并蒂幽芳，脉脉清涟坐。数载相思眉淡锁。而今天与安排妥。
彼此烟中开婀娜。一样深情，一样深怜么？一样深心休可可。生生惜取姻缘果。

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关于弦论大会的一篇文章

这篇文章发表于 2006年7月12日, 星期三 0:00:32，属于分类 理论物理。 你可以查看 HTML打印版 或通过 新闻聚合(RSS) 来追踪这篇文章的最新评论。 在文章后 发表评论。