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- Quantum_gravity abstract "Quantum gravity (QG) is a field of theoretical physics that seeks to describe the force of gravity according to the principles of quantum mechanics.The current understanding of gravity is based on Albert Einstein's general theory of relativity, which is formulated within the framework of classical physics. On the other hand, the nongravitational forces are described within the framework of quantum mechanics, a radically different formalism for describing physical phenomena based on probability. The necessity of a quantum mechanical description of gravity follows from the fact that one cannot consistently couple a classical system to a quantum one.Although a quantum theory of gravity is needed in order to reconcile general relativity with the principles of quantum mechanics, difficulties arise when one attempts to apply the usual prescriptions of quantum field theory to the force of gravity. From a technical point of view, the problem is that the theory one gets in this way is not renormalizable and therefore cannot be used to make meaningful physical predictions. As a result, theorists have taken up more radical approaches to the problem of quantum gravity, the most popular approaches being string theory and loop quantum gravity.Strictly speaking, the aim of quantum gravity is only to describe the quantum behavior of the gravitational field and should not be confused with the objective of unifying all fundamental interactions into a single mathematical framework. Although some quantum gravity theories such as string theory try to unify gravity with the other fundamental forces, others such as loop quantum gravity make no such attempt; instead, they make an effort to quantize the gravitational field while it is kept separate from the other forces. A theory of quantum gravity which is also a grand unification of all known interactions, is sometimes referred to as a theory of everything (TOE).One of the difficulties of quantum gravity is that quantum gravitational effects are only expected to become apparent near the Planck scale, a scale far smaller in distance (equivalently, far larger in energy) than what is currently accessible at high energy particle accelerators. As a result, quantum gravity is a mainly theoretical enterprise, although there are speculations about how quantum gravity effects might be observed in existing experiments.".
- Quantum_gravity thumbnail Quantum_gravity.png?width=300.
- Quantum_gravity wikiPageExternalLink 2064.pdf.
- Quantum_gravity wikiPageID "25312".
- Quantum_gravity wikiPageRevisionID "604973995".
- Quantum_gravity hasPhotoCollection Quantum_gravity.
- Quantum_gravity subject Category:Physics_beyond_the_Standard_Model.
- Quantum_gravity subject Category:Quantum_gravity.
- Quantum_gravity subject Category:Theories_of_gravitation.
- Quantum_gravity type Abstraction100002137.
- Quantum_gravity type Cognition100023271.
- Quantum_gravity type Explanation105793000.
- Quantum_gravity type HigherCognitiveProcess105770664.
- Quantum_gravity type Process105701363.
- Quantum_gravity type PsychologicalFeature100023100.
- Quantum_gravity type ScientificTheory105993844.
- Quantum_gravity type TheoriesOfGravitation.
- Quantum_gravity type Theory105989479.
- Quantum_gravity type TheoryOfGravitation105990089.
- Quantum_gravity type Thinking105770926.
- Quantum_gravity comment "Quantum gravity (QG) is a field of theoretical physics that seeks to describe the force of gravity according to the principles of quantum mechanics.The current understanding of gravity is based on Albert Einstein's general theory of relativity, which is formulated within the framework of classical physics. On the other hand, the nongravitational forces are described within the framework of quantum mechanics, a radically different formalism for describing physical phenomena based on probability.".
- Quantum_gravity label "Gravedad cuántica".
- Quantum_gravity label "Gravitação quântica".
- Quantum_gravity label "Gravità quantistica".
- Quantum_gravity label "Gravité quantique".
- Quantum_gravity label "Grawitacja kwantowa".
- Quantum_gravity label "Kwantumgravitatie".
- Quantum_gravity label "Quantengravitation".
- Quantum_gravity label "Quantum gravity".
- Quantum_gravity label "Квантовая гравитация".
- Quantum_gravity label "جاذبية كمية".
- Quantum_gravity label "量子引力".
- Quantum_gravity label "量子重力理論".
- Quantum_gravity sameAs Kvantová_gravitace.
- Quantum_gravity sameAs Quantengravitation.
- Quantum_gravity sameAs Gravedad_cuántica.
- Quantum_gravity sameAs Gravité_quantique.
- Quantum_gravity sameAs Gravità_quantistica.
- Quantum_gravity sameAs 量子重力理論.
- Quantum_gravity sameAs 양자_중력.
- Quantum_gravity sameAs Kwantumgravitatie.
- Quantum_gravity sameAs Grawitacja_kwantowa.
- Quantum_gravity sameAs Gravitação_quântica.
- Quantum_gravity sameAs m.06bb4.
- Quantum_gravity sameAs Q234181.
- Quantum_gravity sameAs Q234181.
- Quantum_gravity sameAs Quantum_gravity.
- Quantum_gravity wasDerivedFrom Quantum_gravity?oldid=604973995.
- Quantum_gravity depiction Quantum_gravity.png.
- Quantum_gravity isPrimaryTopicOf Quantum_gravity.
