Which approach(es) will lead to a viable theory of quantum gravity? | Manifold

Which approach(es) will lead to a viable theory of quantum gravity?

1

Ṁ70

3000

34%

Gravitational path integral of metric field

34%

Gravitational path integral of gauge variables (e.g., spinfoam models)

34%

Causal set

34%

AdS/CFT

34%

Canonical loop quantum gravity

34%

Quantum geometrodynamics

34%

Gravity is not subject quantum mechanics

Anyone can add answers.

Resolves when there is widespread consensus that a viable theory of quantum gravity has been found, or when this is proven impossible.

By trading in this market, you agree to let me be the judge for subjective matters associated with this market (e.g., what counts as "widespread consensus"). When in doubt, ask before trading.

Update 2025-08-03 (PST) (AI summary of creator comment): - A viable theory must describe our universe. It will not be resolved to YES simply for being mathematically consistent.
- Answers with meanings the creator deems too ambiguous may be resolved to N/A.

This question is managed and resolved by Manifold.

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It's odd that String Theory isn't on here. By some definitions it already is a valid theory of quantum gravity.

@AhronMaline Here a "viable theory" has to describe our universe. I would not resolve an answer to Yes just because it is mathematically consistent.

If you think there is some formulation of "String Theory" other than "AdS/CFT" that should be listed as a candidate answer, feel free to add it.

You are welcome to discuss with me beforehand, though, since I'd resolve an answer (e.g., "String Theory") to N/A if its meaning is ambiguous.

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