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Qmechanic
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Can every theory be equivalent to a CFT or an EFT?

Do all theories of quantum gravity* have a duality with some CFT? Can all theories of quantum gravity be approximated by some EFT? Can CFT and/or EFT be equivalent to all possible theories of physics?

*including: String theory, M-theory, supergravity, loop quantum gravity, causal sets, causal dynamical triangulation, twistor theory...etc (https://en.wikipedia.org/wiki/Quantum_gravity#Other_theories)