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Altered space

  1. May 12, 2006 #1
    does anyone have any equations for calculating time travel without an accelration close, equal or greater than the speed of light

    or equations or theories that would help me understand traversable wormhole theories and how to calculate them
  2. jcsd
  3. May 12, 2006 #2


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    Matt Visser wrote a whole book about Lorentzian Wormholes. It's a few years old now, so it doesn't have the very latest latest, but it has all the basics, the math, the various energy conditions and all the rest. You should master what's in it if you want to read papers on the subject intelligently. But don't imagine you can just memorize some equation and calculate from it. GR, indeed all modern physics, is more complicated than that.
  4. May 12, 2006 #3

    George Jones

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    I really like Visser's book, and I agree that it's the best single resource for understanding the mathematical and physical details in the current literatue, but, because of these things, reading it requires substantial background knowledge.

    From Visser's perface: "It would be helpful if the reader were to understand everything in all of these books. Since this is an unreasonable burden to place on even the best physicist, some attempt will be made to make the present monograph self-contained." This quote is preceded by a list of about a dozen advanced books on relativity and quantum field

    Time travel via wormholes is also discussed in "Time Machines : Time Travel in Physics, Metaphysics, and Science Fiction," which is a wonderful book. This book does use a little mathematics, but at a much lower level than does Visser.

    Kip Thorne wrote a foreword for the second edition of this book, and here's a quote from this foreword: "It now is not only the most complete documentation of time travel in science fiction; it is also the most thorough review of serious scientific literature on the subject - a review that, remarkably, is scientifically accurate and at the same time largely accessible to a broad audience of nonspecialists."

  5. May 15, 2006 #4
    thank you for the information

    ive been reading alot on these topics for years, and atleast a dozen times a day i have to walk away from the literature, have a cigarette and just wait for it all to make sense
    so far i havent found many books involving all the math behind it
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