Word: gravitons
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Dates: during 2000-2009
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...Randall hopes that the Large Hadron Collider, a giant particle accelerator near Geneva, Switzerland will test her theories. Colliding proton beams at a combined energy of 14 trillion electron volts, it will start operation in 2007. The collider could produce particles such as the sought-after graviton believed to convey the gravitational force, or it could produce actual strings...
Gravity, however, would still remain the odd force out. No experimental evidence has emerged to confirm the existence of its transmitting agent, the graviton. And though this hypothetical particle has been accommodated mathematically in unified theories, such models have been fatally flawed by anomalies that leave the theories meaningless. The crux of the problem: the electroweak and strong forces are quantum forces, whereas gravity is still defined only as a consequence of the curvature of space and time and thus cannot yet be explained in terms of quantum physics...