Wednesday, December 31, 2008

Time Travel and More

2008 was a big year in little physics. Quantum mechanics describes the tiny, bizarre world of particles, a world very much at odds with our meager perceptions. New Scientist reviews the year in the quantum world including the conjecture that the Large Hadron Collider could initiate time travel. The massive consolidation of energy produced by the LHC could theoretically lead to time loops. These loops, first found in Einstein's relativity by his friend Kurt Godel, could be exploited in the future to travel back to our time. There are, of course, plenty of practical and theoretical problems with these possibilities. But it's conceivable that the LHC could usher in the era of time travel and introduce us to people from the future. That is, once CERN turns it back on.

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