http://www.wikio.com/search=David Bose Wikio - David Bose http://www.wikio.com/search/David+Bose?rinfoid=63047311 BY AARON ROBINSON, PHOTOGRAPHY BY DAVID DEWHURST It’s man against motherboard in this four-way flog of max-horsepower machines. Behold four machines sitting on the pointy end of a horsepower skyrocket that lifted off sometime in the 1980s and hasn’t hit the chutes yet. For now, anyone can buy these vehicles by flashing a valid driver’s license and a [...] Fri, 04 Jul 2008 11:21:00 GMT http://www.wikio.com/search/David+Bose?rinfoid=63047311 2008-07-04T11:21:00Z http://www.wikio.com/search/David+Bose?rinfoid=62901939 Benny Anderson, Charles Aznavour, Pedro Almodovar, James Blunt, Miguel Bose, Patrick Doyle, Bryan Ferry, Robin Gibb, David Gilmour, Julio Iglesias, Maurice Jarre, Mark Knopfler, Michel Legrand, Paco de Lucia, Sir Paul McCartney... Thu, 03 Jul 2008 15:38:00 GMT http://www.wikio.com/search/David+Bose?rinfoid=62901939 2008-07-03T15:38:00Z http://www.wikio.com/search/David+Bose?rinfoid=60233479 In 1958, Anderson predicted the localization of electronic wavefunctions in disordered crystals and the resulting absence of diffusion. It is now recognized that Anderson localization is ubiquitous in wave physics because it originates from the interference between multiple scattering paths. Experimentally, localization has been reported for light waves, microwaves, sound waves and electron gases. However, there has been no direct observation of exponential spatial localization of matter waves of any type. Here we observe exponential localization of a Bose–Einstein condensate released into a one-dimensional waveguide in the presence of a controlled disorder created by laser speckle. We operate in a regime of pure Anderson localization, that is, with weak disorder—such that localization results from many quantum reflections of low amplitude—and an atomic density low enough to render interactions negligible. We directly image the atomic density profiles as a function of time, and find that weak disorder can stop the expansion and lead to the formation of a stationary, exponentially localized wavefunction—a direct signature of Anderson localization. We extract the localization length by fitting the exponential wings of the profiles, and compare it to theoretical calculations. The power spectrum of the one-dimensional speckle potentials has a high spatial frequency cutoff, causing exponential localization to occur only when the de Broglie wavelengths of the atoms in the expanding condensate are greater than an effective mobility edge corresponding to that cutoff. In the opposite case, we find that the density profiles decay algebraically, as predicted in ref. 13. The method presented here can be extended to localization of atomic quantum gases in higher dimensions, and with controlled interactions. Wed, 11 Jun 2008 17:14:09 GMT http://www.wikio.com/search/David+Bose?rinfoid=60233479 2008-06-11T17:14:09Z http://www.wikio.com/search/David+Bose?rinfoid=59894557 The stars of top soap Emmerdale have vowed to bring their charity Extravaganza back to Northern Ireland following the weekend’s “incredible” event. Mon, 09 Jun 2008 06:12:16 GMT http://www.wikio.com/search/David+Bose?rinfoid=59894557 2008-06-09T06:12:16Z http://www.wikio.com/search/David+Bose?rinfoid=59556245 This year's Vinter Cup second round was completed on Tuesday evening when Falmouth defeated Truro II by 82 runs. Stefan Churcher hit 54 as Falmouth made 145 for five. Truro were dismissed for 63 with Antony Angove, George Popperwell and David ... Thu, 05 Jun 2008 09:00:00 GMT http://www.wikio.com/search/David+Bose?rinfoid=59556245 2008-06-05T09:00:00Z