Note that the total energy of the gravity field has this Q problem suggesting gravity as a "More is different" (P.W. Anderson) low-energy emergent field from a spontaneous broken vacuum symmetry at the Alpha Moment of Inflation (zero conformal time & zero comoving distance in Tamara Davis’s Fig 1.1 c) from false to true vacuum in the above picture.
On the other hand gravity is also induced by localizing the universal global gauge (De Sitter - Poincare group) - so how do we merge these two ideas from different levels?
One model is G = O(9) spontaneously breaks to H = O(8) giving 8 Goldstone post-inflation condensates whose quantized vibrations are the massless SU3 QCD gluons via an analytic continuation of non-compact O(9)/O(8) to compact SU3?
This model has 28 Higgs-like massive bosons - not to be confused with the single electro-weak Higgs allegedly now found at LHC from G = U1xSU2 ---> H = U1 where the three massless W bosons of SU2 essentially absorb the three massless Goldstone bosons leaving only the single massive Higgs boson in this simplest of models.
28 + 8 = 36 = 9x8/2 = number of spacetime charges in string theory type O(9) spacelike sub-group of string theory O(1,9) with 6 extra space dimensions.O(9) is for the spacelike slices of O(1,9) used in superstring theory