Strings Link the Ultracold with the Superhot

Perfect liquids suggest theory’s math mirrors something real

By Tom Siegfried, 10:07 AM April 9, 2009

Shadows live in a simple world. They glide effortlessly across any sort of surface, oblivious to the higher dimension of space in which 3-D bodies move, collide and sometimes block the paths of rays of light.

Shadows have no idea how important that third dimension is, and how objects in it endow those very shadows with their quasi-physical existence. Indeed, the laws of shadow physics all depend on the third dimension’s presence. And just as the clueless inhabitants of the shadow world requir...

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