Talk of time travel is back, and, for good this time … perhaps. The eminently qualified Michio Kaku surveys the paradox-fraught field of temporal excursions in a new article entitled “The Physics of Time Travel - Real or Fable?” just published in Quantum Biocommunication.

Kaku states that time travel is at least theoretically possible, as evidenced by a solution to Einstein’s equations put forth by Kurt Goedel, whose work portrays time as a kind of fluid that circulates at varying speeds around and about the universe. And recent developments in the field of quantum gravity have encouraged Kaku enough to imply that the possibilty of time travel is a definite maybe.

The remainder of the article postulates that causality violation can be avoided by means of spinning off a parallel universe just when you happen to take some untoward action, such as killing off your biological grandfather. And then there’s the small problem of actually getting to a different time, which the author suggests can accomplished by stepping through a wormhole caused by a rapidly spinning ring of neutrons created by a rotating black hole [.. good luck in finding a traversable wormhole..]

The Compleat Time Traveller it’s not, but the opening chapters of that book seem to be taking shape.

The Physics of Time Travel - Real or Fable? - Quantum Biocommunication, February 16th, 2006

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