Question

Why is a theory of quantum gravity expected to solve the BigBang singularity problem?

Answer 1

Because it implies breakdown in classical geometric description of space at small scales, and therefore makes point singularities impossible by definition. The standard GR description emerges analogously to how description in terms of elastic waves, say, emerges from more basic description in terms of particle oscillations, it would make no sense to ask what a wave "looks like" on scales smaller than wavelength

Answer 2

Hey !

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No theory!

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Thanks !