http://gezhi.org/keyword/1128 The taxonomy view with a depth of 0. zh-hans http://gezhi.org/blog/joyphys/1126 <p> 1900年，著名的数学家希尔波特在巴黎国际数学家大会上提出了23个数学问题。这些问题激发了全世界数学家的兴趣。希尔波特的问题对数学的研究方向产生了深远的影响，并且超出他最初提出的23个问题。<br /> 在2000年超弦会议上，所有与会者也被请来提出基础物理学中十个最重要的问题。每个参与者只允许提出一个候选问题。为保证质量，这些问题不仅仅是重要的，还要外延清楚表述清晰。<br /> 在会议最后，由Michael Duff、David Gross、Edward Witten三人组成的问题评选委员会确定了以下十个问题。</p> <blockquote><p> Here are the problems:<br /> 1. Are all the (measurable) dimensionless parameters that characterize the physical universe calculable in principle or are some merely determined by historical or quantum mechanical accident and uncalculable?<br /> David Gross, Institute for Theoretical Physics, University of California, Santa Barbara </p> <p>2. How can quantum gravity help explain the origin of the universe?<br /> Edward Witten, California Institute of Technology and Institute for Advanced Study, Princeton<br /> 3. What is the lifetime of the proton and how do we understand it?<br /> Steve Gubser, Princeton University and California Institute of Technology<br /> 4. Is Nature supersymmetric, and if so, how is supersymmetry broken?<br /> Sergio Ferrara, CERN (European Laboratory of Particle Physics)<br /> Gordon Kane, University of Michigan<br /> 5. Why does the universe appear to have one time and three space dimensions?<br /> Shamit Kachru, University of California, Berkeley<br /> Sunil Mukhi, Tata Institute of Fundamental Research<br /> Hiroshi Ooguri, California Institute of Technology<br /> 6. Why does the cosmological constant have the value that it has, is it zero and is it really constant?<br /> Andrew Chamblin, Massachusetts Institute of Technology<br /> Renata Kallosh, Stanford University<br /> 7. What are the fundamental degrees of freedom of M-theory (the theory whose low-energy limit is eleven-dimensional supergravity and which subsumes the five consistent superstring theories) and does the theory describe Nature?<br /> Louise Dolan, University of North Carolina, Chapel Hill<br /> Annamaria Sinkovics, Spinoza Institute<br /> Billy &amp; Linda Rose, San Antonio College<br /> 8. What is the resolution of the black hole information paradox?<br /> Tibra Ali, Department of Applied Mathematics and Theoretical Physics, Cambridge<br /> Samir Mathur, Ohio State University<br /> 9. What physics explains the enormous disparity between the gravitational scale and the typical mass scale of the elementary particles?<br /> Matt Strassler, Institute for Advanced Study, Princeton<br /> 10. Can we quantitatively understand quark and gluon confinement in Quantum Chromodynamics and the existence of a mass gap?<br /> Igor Klebanov, Princeton University<br /> Oyvind Tafjord, McGill University<br /> These ten questions were presented by David Gross at the closing of the conference on Saturday July 15, 2000.<br /> 以下是彭罗斯的演讲<a href="http://">http://feynman.physics.lsa.umich.edu/cgi-bin/s2ktalk.cgi?questions</p> http://gezhi.org/blog/joyphys/1126#comments 基础物理 宇宙 超弦 问题 Fri, 01 Aug 2008 19:21:38 -0700 joyphys 1126 at http://gezhi.org