Physics:Quantum gravity problem - Revision history

Maintenance script: Normalize quantum page header order

2026-05-22T11:34:38Z

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	{{Quantum book backlink\|Advanced and frontier topics}}		{{Quantum book backlink\|Advanced and frontier topics}}
	{{Quantum article nav\|previous=Physics:Quantum Yang-Mills mass gap\|previous label=Yang-Mills mass gap\|next=Physics:Quantum black hole information paradox\|next label=Black hole information paradox}}		{{Quantum article nav\|previous=Physics:Quantum Yang-Mills mass gap\|previous label=Yang-Mills mass gap\|next=Physics:Quantum black hole information paradox\|next label=Black hole information paradox}}

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2026-05-22T11:12:55Z

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	{{Short description\|Open problem of reconciling quantum theory with gravity}}		{{Short description\|Open problem of reconciling quantum theory with gravity}}

	{{Quantum book backlink\|Advanced and frontier topics}}		{{Quantum book backlink\|Advanced and frontier topics}}
	{{Quantum article nav\|previous=Physics:Quantum Yang-Mills mass gap\|previous label=Yang-Mills mass gap\|next=Physics:Quantum black hole information paradox\|next label=Black hole information paradox}}		{{Quantum article nav\|previous=Physics:Quantum Yang-Mills mass gap\|previous label=Yang-Mills mass gap\|next=Physics:Quantum black hole information paradox\|next label=Black hole information paradox}}

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	{{Short description\|Open problem of reconciling quantum theory with gravity}}~~Book I~~		{{Short description\|Open problem of reconciling quantum theory with gravity}}

	{{Quantum book backlink\|Advanced and frontier topics}}		{{Quantum book backlink\|Advanced and frontier topics}}

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	{{Quantum book backlink\|Advanced and frontier topics}}		{{Quantum book backlink\|Advanced and frontier topics}}

Maintenance script: Apply Quantum previous-next navigation

2026-05-20T12:27:55Z

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	{{Short description\|Open problem of reconciling quantum theory with gravity}}		{{Short description\|Open problem of reconciling quantum theory with gravity}}

	{{Quantum book backlink\|Advanced and frontier topics}}		{{Quantum book backlink\|Advanced and frontier topics}}
			{{Quantum article nav\|previous=Physics:Quantum Yang-Mills mass gap\|previous label=Yang-Mills mass gap\|next=Physics:Quantum black hole information paradox\|next label=Black hole information paradox}}

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Maintenance script: Clean Book I red links, intro, and image slots

2026-05-20T08:18:55Z

Clean Book I red links, intro, and image slots

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	The '''quantum gravity problem''' is the open problem of reconciling [[Physics:Quantum mechanics\|quantum mechanics]] with the gravitational description of spacetime. Quantum theory describes matter and fields through states, operators, probabilities, and quantum fields, while ~~[[Physics:General relativity\|~~general relativity]] describes gravity as the curvature of spacetime. A theory of quantum gravity would explain regimes where both quantum effects and gravitational effects are important.		The '''quantum gravity problem''' is the open problem of reconciling [[Physics:Quantum mechanics\|quantum mechanics]] with the gravitational description of spacetime. Quantum theory describes matter and fields through states, operators, probabilities, and quantum fields, while general relativity describes gravity as the curvature of spacetime. A theory of quantum gravity would explain regimes where both quantum effects and gravitational effects are important.

	The problem is especially important near black holes, in the very early universe, and at distances close to the Planck scale. In these regimes, treating spacetime as a fixed classical background is expected to fail. A complete theory should explain how spacetime, geometry, causality, and gravitational dynamics are related to quantum principles.<ref name="SEPQuantumGravity">{{Cite web \|last=Weinstein \|first=Steven \|title=Quantum Gravity \|url=https://plato.stanford.edu/entries/quantum-gravity/ \|website=Stanford Encyclopedia of Philosophy \|publisher=Metaphysics Research Lab, Stanford University \|access-date=7 May 2026}}</ref>		The problem is especially important near black holes, in the very early universe, and at distances close to the Planck scale. In these regimes, treating spacetime as a fixed classical background is expected to fail. A complete theory should explain how spacetime, geometry, causality, and gravitational dynamics are related to quantum principles.<ref name="SEPQuantumGravity">{{Cite web \|last=Weinstein \|first=Steven \|title=Quantum Gravity \|url=https://plato.stanford.edu/entries/quantum-gravity/ \|website=Stanford Encyclopedia of Philosophy \|publisher=Metaphysics Research Lab, Stanford University \|access-date=7 May 2026}}</ref>

Maintenance script: Normalize Quantum book page structure and short text

2026-05-19T23:06:53Z

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	{{Author\|Harold Foppele}}		{{Author\|Harold Foppele}}

	{{Sourceattribution\|Quantum gravity problem\|1}}		{{Sourceattribution\|Physics:Quantum gravity problem\|1}}

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	No experimentally confirmed, complete theory of quantum gravity is currently known. Several major approaches exist, including string theory, loop quantum gravity, spin foam models, causal sets, asymptotic safety, and effective field theory methods. These approaches differ in how they treat spacetime, background independence, unification, and the relation between geometry and quantum states.<ref name="SEPQuantumGravity" />		No experimentally confirmed, complete theory of quantum gravity is currently known. Several major approaches exist, including string theory, loop quantum gravity, spin foam models, causal sets, asymptotic safety, and effective field theory methods. These approaches differ in how they treat spacetime, background independence, unification, and the relation between geometry and quantum states.<ref name="SEPQuantumGravity" />

	~~<div style="float:right; border:1px solid #e0d890; background:#fff8cc; padding:6px; margin:0 0 1em 1em; width:360px;">~~
	~~<div style="font-size:90%;">The quantum gravity problem asks how quantum theory and dynamical spacetime fit into one consistent framework.</div>~~
	~~</div>~~
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	[[File:Quantum_gravity_problem_yellow.png\|thumb\|280px\|~~Quantum~~ gravity problem.]]		[[File:Quantum_gravity_problem_yellow.png\|thumb\|280px\|The quantum gravity problem asks how quantum theory and dynamical spacetime fit into one consistent framework.]]
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	{{Short description\|Open problem of reconciling quantum theory with gravity}}		{{Short description\|Open problem of reconciling quantum theory with gravity}}

	{{Quantum book backlink\|Advanced and frontier topics}}		{{Quantum book backlink\|Advanced and frontier topics}}

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	The '''quantum gravity problem''' is the open problem of reconciling [[Physics:Quantum mechanics\|quantum mechanics]] with the gravitational description of spacetime. Quantum theory describes matter and fields through states, operators, probabilities, and quantum fields, while [[Physics:General relativity\|general relativity]] describes gravity as the curvature of spacetime. A theory of quantum gravity would explain regimes where both quantum effects and gravitational effects are important.		The '''quantum gravity problem''' is the open problem of reconciling [[Physics:Quantum mechanics\|quantum mechanics]] with the gravitational description of spacetime. Quantum theory describes matter and fields through states, operators, probabilities, and quantum fields, while [[Physics:General relativity\|general relativity]] describes gravity as the curvature of spacetime. A theory of quantum gravity would explain regimes where both quantum effects and gravitational effects are important.

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	~~[[File:Quantum_gravity_problem_yellow.png\|340px]]~~
	<div style="font-size:90%;">The quantum gravity problem asks how quantum theory and dynamical spacetime fit into one consistent framework.</div>		<div style="font-size:90%;">The quantum gravity problem asks how quantum theory and dynamical spacetime fit into one consistent framework.</div>
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			[[File:Quantum_gravity_problem_yellow.png\|thumb\|280px\|Quantum gravity problem.]]
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imported>WikiHarold: Replace raw Quantum Collection backlink with B backlink template

2026-05-08T19:18:09Z

Replace raw Quantum Collection backlink with B backlink template

← Older revision	Revision as of 19:18, 8 May 2026
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	{{Short description\|Open problem of reconciling quantum theory with gravity}}		{{Short description\|Open problem of reconciling quantum theory with gravity}}

	{{Quantum book backlink\|Advanced and frontier topics}}		{{Quantum book backlink\|Advanced and frontier topics}}
	{{Quantum article nav\|previous=Physics:Quantum Yang-Mills mass gap\|previous label=Yang-Mills mass gap\|next=Physics:Quantum black hole information paradox\|next label=Black hole information paradox}}		{{Quantum article nav\|previous=Physics:Quantum Yang-Mills mass gap\|previous label=Yang-Mills mass gap\|next=Physics:Quantum black hole information paradox\|next label=Black hole information paradox}}