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Quantum or torsion gravity models predict unusual properties of space-time at very short dis- tances. In particular, near the Planck length, around 10−35m, empty space may behave as a crystal, singly or doubly refractive. However, this hypothesis remains uncheckable for any direct measure- ment since the smallest distance accessible in experiment is about 10−19m at the LHC. Here I propose a laboratory test to measure the space refractivity and birefringence induced by gravity. A sensitivity from 10−31m down to the Planck length could be reached at existent GeV and future TeV energy lepton accelerators using laser Compton scattering. There are already experimental hints for gravity signature at distances approaching the Planck length by 5–7 orders of magnitude, derived from SLC and HERA data.
edit on 18-10-2012 by ubeenhad because: (no reason given)
Originally posted by XPLodER
reply to post by ubeenhad
if photons are "massless" how does gravity "bend' the path of the photon? if you assume mass warping space time,
how does the distorted space time effect refraction values?
and how do you "account" for optical refraction rates that may differ in high gravity/energy environments?
is optical refraction at the distance scales implied, even computed in your thesis?
edit on 18-10-2012 by XPLodER because: (no reason given)