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It seems like the discourse over a unified Einstein and Quantum Gravity disregards the phenomena encountered in our local observable universe, such as we find throughout the Intergalactic Medium. One example: Is the Density Difference between our solar system and space itself beyond the heliosphere (as Voyager left the solar system).

  1. In the models attempting to unify Einstein and Quantum Gravity, shouldn't this be a consideration?

  2. Would the attributes we find in the IGM/IPM help to unify the two?

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    $\begingroup$ I'm afraid the problems with quantum gravity are rather more fundamental then accounting for local inhomogeneities in average density. $\endgroup$
    – John Rennie
    Oct 28, 2014 at 8:20
  • $\begingroup$ I suspect that the answers we are looking for will come from fairly cheap table top experiments testing the limits of quantum theory in the macroscopic world. Just an opinion. $\endgroup$
    – user56903
    Oct 28, 2014 at 8:31
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    $\begingroup$ can you please give a link for what this IGM/IPM means? $\endgroup$
    – anna v
    Oct 28, 2014 at 9:24
  • $\begingroup$ Possible duplicate by OP: physics.stackexchange.com/q/143237/2451 $\endgroup$
    – Qmechanic ♦
    Oct 28, 2014 at 10:28
  • $\begingroup$ Hi Artaudo Chrétien. Welcome to Phys.SE. Please don't repost a closed question in a new entry. Instead, you are supposed to edit the original question within the original entry. $\endgroup$
    – Qmechanic ♦
    Oct 28, 2014 at 10:29

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