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String theory experiments

  1. Feb 3, 2013 #1
    I have been following Dr. Michio Kaku and his ideas on string theory. My question is, with the addition of other dimensions, what types of experiments and/or results could possibly provide evidence that this theory is correct. If we currently can't perceive these "discrete" dimensions, what would it take to infer their existence? Any thoughts?
  2. jcsd
  3. Feb 3, 2013 #2


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    Typically a force (like electromagnetism) mediated by massless particles (like photons) scales as ~ 1/r^(D-1) for distance r and number of spatial dimensions D. So for very high energy the additional dimensions d (with D = 3+d) should become visible in scattering processes and one should expect 1/r^(2+d) instead of 1/r^2.
  4. Feb 4, 2013 #3
    Thank you, that explanation was actually quite a bit simpler than what I was expecting, but it makes sence.
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