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Q.NO.1K:- WHAT DO YOU THINK IS TIME TRAVEL POSSIBLE!!
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Time travel to the past is theoretically possible in certain general relativity spacetime geometries that permit traveling faster than the speed of light, such as cosmic strings, transversable wormholes, and Alcubierre drives.
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Quantum mechanics of time travel. Until, recently, most studies on time travel are based upon classical general relativity. Coming up with a quantum version of time travel requires us to figure out the time evolution equations for density states in the presence of closed timelike curves (CTC).
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