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The 55 pages that link to Quantum gravity, each with the reason it gives.

• Quantum field theoryNarrower topic: Ordinary quantum field theory does not provide a complete, established quantization of gravity.

• GravityNarrower topic: No experimentally confirmed theory yet unifies gravity with quantum physics.

• String theoryNarrower topic: String theory is one proposed framework for quantum gravity.

• Gravitational fieldNarrower topic: A complete account must reconcile gravitational fields with quantum physics.

• Paul DiracNarrower topic: Dirac’s attempts to connect fundamental principles foreshadowed the still-unsolved unification of gravity and quantum theory.

• Hawking radiationNarrower topic: The final stages of evaporation likely require physics beyond the semiclassical calculation.

• Zero-point energyNarrower topic: A consistent theory may clarify how quantum ground-state energy gravitates.

• GravitonNarrower topic: Gravitons arise in approaches that try to quantize gravity.

• Hidden-variable theoryNarrower topic: A deeper theory of spacetime may alter assumptions underlying hidden-variable formulations.

• Quantum fieldNarrower topic: Known quantum field theories do not yet provide a complete account of dynamical spacetime.

• Planck scaleNarrower topic: It is the kind of theory expected to govern physics in this regime.

• Planck unitsNarrower topic: Planck units identify the regime where a quantum description of gravity is expected to be necessary.

• GravitationNarrower topic: It seeks to reconcile general relativity with quantum physics.

• Holographic principleNarrower topic: The holographic principle is a proposed organizing feature of quantum gravity.

• Planck epochNarrower topic: A complete theory is needed to describe the Planck epoch’s expected quantum-gravitational regime.

• Heat death of the universeNarrower topic: Unknown quantum-gravitational effects could change predictions about horizons and the universe’s ultimate state.

• M-theoryNarrower topic: M-theory is a candidate framework for quantum gravity, but its empirical status is unknown.

• Vacuum energyNarrower topic: A complete account may clarify how quantum vacuum energy gravitates.

• Big BounceNarrower topic: A bounce near Planck-scale density requires physics beyond classical general relativity.

• Superstring theoryNarrower topic: Superstring theory is a candidate framework for unifying quantum physics with gravity.

• SupergravityNarrower topic: Supergravity is a candidate framework, but does not by itself provide a complete quantum theory.

• Quantum foamNarrower topic: Quantum foam is an image associated with the unresolved effort to quantize gravity.

• Physics beyond the Standard ModelNarrower topic: The Standard Model does not incorporate gravity, leaving a fundamental theoretical gap.

• Quantum vacuum stateNarrower topic: A complete account of vacuum energy likely requires understanding its interaction with quantum spacetime.

• Symmetry-based models (mathematical physics)Narrower topic: A complete theory must reconcile quantum dynamics with spacetime symmetries and gravitational constraints.