Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Tachyon refraction

  1. Feb 13, 2015 #1
    This is pure conjecture but I was thinking about it and wanted to ask people who know more about tachyons than I do:

    In a vacuum:

    Particles with mass can only travel with v < c
    Mass-less particles can only travel with v = c
    Tachyons can only travel with v > c

    If you refract light by passing it through a medium with a refractive index > 1 it slows down. I have heard of experiments where light is slowed to virtually a complete stand still, so my question is this:

    What would happen if you can slow a tachyon down to the speed of light? Would it give up its energy and instantaneously create mass-less particles? Or does that violate the laws of physics? If it did could you use that result to detect tachyons?
  2. jcsd
  3. Feb 13, 2015 #2


    User Avatar
    2017 Award

    Staff: Mentor

    Please give a reference to a model that predicts such a slow-down. All your questions can only be answered within such a model, there is nothing to discuss until you found such a reference. I closed the thread, feel free to send me a message if you want to discuss a specific tachyon model.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook