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In 1988, John Cardy asked if there was a c-theorem in four dimensions.

By Eugenie Samuel Reich of Nature magazine When John Cardy proposed a far-reaching principle to constrain all possible theories of quantum particles and fields, he expected it to be quickly rebutted. [More]

Rice University physicists have created a tiny "electron superhighway" that could one day be useful for building a quantum computer, a new type of computer that will use quantum particles in place of the digital transistors found in today's microchips.