Does a complete theory of quantum gravity require anthropic post-selection?
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Quantum gravity is a gauge theory. The gauge in question is diffeomorphisms. This includes timelike diffeomorphisms. Quantum gravity states have to be invariant under timelike diffeomorphisms, no? Any postselection criteria also needs to be invariant under timelike diffeomorphisms, no? So, postselection criteria only at the conformal boundaries, no? Basically, only consider those diffeomorphisms which don't act upon boundary points. A boundary condition on diffeomorphisms.
If there is anthropic postselection, diffeomorphism invariance requires that to happen someplace on the conformal boundaries of spacetime. Could it be at the past boundary at the big bang? no. So only the future conformal boundary of spacetime then? This supports the final anthropic principle of Tipler and Barrow. Intelligent life will last forever and will never die out!
If there is anthropic postselection, diffeomorphism invariance requires that to happen someplace on the conformal boundaries of spacetime. Could it be at the past boundary at the big bang? no. So only the future conformal boundary of spacetime then? This supports the final anthropic principle of Tipler and Barrow. Intelligent life will last forever and will never die out!
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