Artificial Braneworlds Made to Collide In Lab - Technology Review - 4 views
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santecarloni on 31 Jan 12Physicists have simulated two universes colliding inside a metamaterial-- Now, this is cool (if it is true...)
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Luzi Bergamin on 05 Feb 12Hm, they use more or less everything I don't especially like. They are nonmagnetic, so the relation materialGR is already rather weak. Usually, experimentalists prefer nonmagnetic media, since they are cheaper and broadband. At least the broadband is no argument here, since the frequency defines the "mass", which I find a rather strange point of view. And finally, they use strong anisotropy as a model of "time", which is rather problematic. Of course, the spatial direction with eps<0 appears in the wave equation with the same sign as time. But this does not mean that it behaves like time. But to teach material physicists that time is more than just a different sign in the wave equation seems to be as hopeless as to teach them that a black hole is more than something that absorbs all light... SIGHHH
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LeopoldS on 10 Feb 12Luzi I miss you ...