(November 20, 2016 at 9:06 am)Alex K Wrote: The fact is that nobody knows. We know that gravitational waves exist, but there is no real experimental test which could tell us that these waves have quanta the same way electromagnetism has photons. It seems overwhelmingly likely though, for the simple fact that matter causes gravitation, but matter is fundamentally made of particles subject to quantum uncertainty, and it is difficult to imagine how this quantum uncertainty would not get transferred to the gravity. For example, if an electron is in a quantum superposition of being in place A and in place B, what is its gravity? Half here half there? Does the superposition vanish when you measure the gravity? It should! So, in order not to mess up the logic of quantum mechanics, the gravitational force needs to play by the same quantum rules, and that would usually entail the existence gravitons.
Would there be a spectrum of energy analog in regards to gravitons as there is with photons ?
I guess I was assuming the LIGO device was measuring gravitational waves 'composed' of gravitons of identical energy equivalence. If individual gravitons can have varying levels of energy, well, there outta be some really biguns leftover from the big bang flying around still and scattered sufficiently they are no longer organized into detectable waves but are more like the 'sea of neutrinos' we are saturated in.
And if there is enough of 'em is that the dark matter, or dark energy or quintessence, or ylem they are looking for and not finding ?
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