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If spacetime is composed of tiny quantum "grains," the gamma-ray photons' polarization should change from random polarization (at the GRB source) to biased toward a certain polarization when received by the Integral spacecraft .
The Integral polarization results depend on spacetime being constructed from discrete quanta that behave in a way that fits with quantum theory. The holographic universe hypothesis goes one step further, constructing 3-dimensional spacetime from projections of a 2-dimensional "shell" -- perhaps gamma-ray photons behave differently in this fuzzy, projected, quantum world, and this could be why no polarization difference between gamma-ray photons are detected.
"This is a very important result in fundamental physics and will rule out some string theories and quantum loop gravity theories," said Laurent in the ESA press release.
http://news.discovery.com/space/we-might-not-live-in-a-hologram-after-all-110701.html
The Integral polarization results depend on spacetime being constructed from discrete quanta that behave in a way that fits with quantum theory. The holographic universe hypothesis goes one step further, constructing 3-dimensional spacetime from projections of a 2-dimensional "shell" -- perhaps gamma-ray photons behave differently in this fuzzy, projected, quantum world, and this could be why no polarization difference between gamma-ray photons are detected.
"This is a very important result in fundamental physics and will rule out some string theories and quantum loop gravity theories," said Laurent in the ESA press release.
http://news.discovery.com/space/we-might-not-live-in-a-hologram-after-all-110701.html