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Computational complexity theorists argue that semiclassical gravity's non-linear dynamics would enable impossibly powerful computation, proving gravity must be quantized. The paper uses the Schrödinger-Newton equation to show that classical gravity coupled to quantum matter leads to computational contradictions.
This paper argues that under semiclassical gravity, a massive qubit can solve NP-complete problems in polynomial time via nonlinear dynamics, implying gravity must be quantized.
Physicists have identified a quantum property called 'magic' that may explain how matter tells space-time to curve, addressing a key challenge in holographic theories of quantum gravity.
OpenAI researchers and collaborators have published a preprint showing that single-minus graviton tree amplitudes are nonzero under special kinematic conditions (the half-collinear regime), challenging long-held assumptions. Notably, GPT-5.2 Pro was used to derive the gravitational extension from prior gluon results, representing a significant AI-assisted breakthrough in theoretical physics.