谁来讲十分钟: Holes block light in very thin films Nov 17, 2009 What happens if you drill an array of tiny holes into a metal foil and then measure how much light the holes allow through? It turns out as physicists discovered back in 1998 that much more is tran ...
谁来讲十分钟: Photo finish in race for strontium condensate Nov 18, 2009 An expanding field An Austrian group has beaten its US counterpart by a matter of days in a race to create a Bose-Einstein condensate (BEC) of strontium atoms. Research ...
实验证实任意子分数统计 邱荣涛 2009年11月19日下午4:30-6:1018教学楼405 Anyons are exotic quasiparticles living in two dimensions that do not fit into the usual categories of fermions and bosons, but obey a new form of fractional statistics. Following a rec ...
谁来讲十分钟: There and back again: from magnets to superconductors A theory of novel phase formation near quantum critical points suggests that large fluctuations lead to magnetic analogs of inhomogeneous superconductivity. 详细 文献: G. J. Conduit, A. G. Green, and B. D. S ...
Ultracold fermions in a graphene-type optical lattice Kean Loon Lee (李健伦), Benot Grmaud, Rui Han (韩睿), Berthold-Georg Englert, and Christian Miniatura Phys. Rev. A 80, 043411 (Published October 19, 2009) Two highly active fields of physics have merged in recent years, ...
Universe's quantum 'speed bumps' no obstacle for light A hint that quantum fluctuations in the fabric of the universe slow the speed of light has not been borne out in observations by NASA's Fermi telescope. The measurements contradict a 2005 result that supported the idea that spac ...
小道消息: Accelerating neutral atoms (邱荣涛) The intensity gradients of inhomogeneous laser-light fields impose ponderomotive forces on charged particles. Such forces have been used to trap and manipulate ions, diffract electrons, and generate charge waves in plasmas. But they were tho ...
谁来讲十分钟: Nearly perfect fluidity Thomas Schfer Is there a fundamental lower bound on viscosity? To answer this question, we can look at the coldest and hottest fluids that laboratories are able to produce. From everyday experience, we have an intuitive feel for how a &ld ...