So here comes some incoherent rambling …
It has been shown that einsteins field equations are basically thermodynamical equations. Now it also has been suggested that by wick rotations there is a analogy between QFT and statistical thermodynamics. Also isn’t there a theorem that a n dimension field theory can be recast in n+1 dimensional field theory in euclidean space. This sounds holography-ish. I don’t really know what I’m getting at but it seems like this field can be plowed for maybe some more interesting facts.
A writing place. 