GEO600 gravitation wave experiment noise could confirm the holographic universe string theory prediction.
Jacob Bekenstein showed that the information content of a black hole is proportional to the two-dimensional surface area of its event horizon, resolving the black hole information paradox by explaining how lost information could be encoded in Hawking radiation.
The holographic principle is a property of quantum gravity and string theory: the description of a volume of space can be thought of as encoded on a boundary to the region.
If our three dimensional universe is merely a projection of the information encoded on the 2D surface of its event horizon, 42 million light years away, there would be detectable granularities in space time, like pixels on a computer screen, only 10-16 meters wide. If not, the “pixels” would be 10-35 meters wide.
The GEO600 gravitational wave experiment has been bothered by noise perturbations that seem to fit the predicted theory of a holographic universe.
Confirmation of this result would validate the predictions made by string theory regarding the quantization of gravity and the granularity of space time.
Theoretically, the European Space Agency's Integral Gamma Ray Observatory satellite should also be able to measure perturbations at that scale, but has not detected any such signal, which would necessitate rethinking the theory.
Fermilab particle astrophysicist, Craig Hogan is designing a holometer capable of testing the theory of a holographic universe directly.