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- Nonsymmetric_gravitational_theory abstract "In theoretical physics, the nonsymmetric gravitational theory (NGT) of John Moffat is a classical theory of gravitation that tries to explain the observation of the flat rotation curves of galaxies.In general relativity, the gravitational field is characterized by a symmetric rank-2 tensor, the metric tensor. The possibility of generalizing the metric tensor has been considered by many, including Einstein and others. A general (nonsymmetric) tensor can always be decomposed into a symmetric and an antisymmetric part. As the electromagnetic field is characterized by an antisymmetric rank-2 tensor, there is an obvious possibility for a unified theory: a nonsymmetric tensor composed of a symmetric part representing gravity, and an antisymmetric part that represents electromagnetism. Research in this direction ultimately proved fruitless; the desired classical unified field theory was not found.In 1979, Moffat made the observation that the antisymmetric part of the generalized metric tensor need not necessarily represent electromagnetism; it may represent a new, hypothetical force. Later, in 1995, Moffat noted that the field corresponding with the antisymmetric part need not be massless, like the electromagnetic (or gravitational) fields.In its original form, the theory may be unstable, although this has only been shown in the case of the linearized version.In the weak field approximation where interaction between fields is not taken into account, NGT is characterized by a symmetric rank-2 tensor field (gravity), an antisymmetric tensor field, and a constant characterizing the mass of the antisymmetric tensor field. The antisymmetric tensor field is found to satisfy the equations of a Maxwell–Proca massive antisymmetric tensor field. This led Moffat to propose Metric Skew Tensor Gravity (MSTG), in which a skew symmetric tensor field postulated as part of the gravitational action.A newer version of MSTG, in which the skew symmetric tensor field was replaced by a vector field, is scalar–tensor–vector gravity (STVG). STVG, like Milgrom's Modified Newtonian Dynamics (MOND), can provide an explanation for flat rotation curves of galaxies.".
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- Nonsymmetric_gravitational_theory wikiPageRevisionID "650895966".
- Nonsymmetric_gravitational_theory wikiPageWikiLink Albert_Einstein.
- Nonsymmetric_gravitational_theory wikiPageWikiLink Antisymmetric_tensor.
- Nonsymmetric_gravitational_theory wikiPageWikiLink Category:Theories_of_gravitation.
- Nonsymmetric_gravitational_theory wikiPageWikiLink Classical_mechanics.
- Nonsymmetric_gravitational_theory wikiPageWikiLink Electromagnetic_field.
- Nonsymmetric_gravitational_theory wikiPageWikiLink Galaxy_rotation_curve.
- Nonsymmetric_gravitational_theory wikiPageWikiLink General_relativity.
- Nonsymmetric_gravitational_theory wikiPageWikiLink Gravity.
- Nonsymmetric_gravitational_theory wikiPageWikiLink John_Moffat_(physicist).
- Nonsymmetric_gravitational_theory wikiPageWikiLink Metric_Skew_Tensor_Gravity.
- Nonsymmetric_gravitational_theory wikiPageWikiLink Metric_tensor.
- Nonsymmetric_gravitational_theory wikiPageWikiLink Modified_Newtonian_dynamics.
- Nonsymmetric_gravitational_theory wikiPageWikiLink Mordehai_Milgrom.
- Nonsymmetric_gravitational_theory wikiPageWikiLink Proca_action.
- Nonsymmetric_gravitational_theory wikiPageWikiLink Scalar–tensor–vector_gravity.
- Nonsymmetric_gravitational_theory wikiPageWikiLink Symmetric_tensor.
- Nonsymmetric_gravitational_theory wikiPageWikiLink Tensor.
- Nonsymmetric_gravitational_theory wikiPageWikiLink Theoretical_physics.
- Nonsymmetric_gravitational_theory wikiPageWikiLink Unified_field_theory.
- Nonsymmetric_gravitational_theory wikiPageWikiLinkText "Nonsymmetric gravitational theory".
- Nonsymmetric_gravitational_theory wikiPageWikiLinkText "non-symmetric gravitation theory".
- Nonsymmetric_gravitational_theory wikiPageWikiLinkText "nonsymmetric gravitational theory".
- Nonsymmetric_gravitational_theory wikiPageUsesTemplate Template:Physics-stub.
- Nonsymmetric_gravitational_theory wikiPageUsesTemplate Template:Reflist.
- Nonsymmetric_gravitational_theory wikiPageUsesTemplate Template:Theories_of_gravitation.
- Nonsymmetric_gravitational_theory subject Category:Theories_of_gravitation.
- Nonsymmetric_gravitational_theory hypernym Theory.
- Nonsymmetric_gravitational_theory type Work.
- Nonsymmetric_gravitational_theory type Physic.
- Nonsymmetric_gravitational_theory type Redirect.
- Nonsymmetric_gravitational_theory type Theory.
- Nonsymmetric_gravitational_theory comment "In theoretical physics, the nonsymmetric gravitational theory (NGT) of John Moffat is a classical theory of gravitation that tries to explain the observation of the flat rotation curves of galaxies.In general relativity, the gravitational field is characterized by a symmetric rank-2 tensor, the metric tensor. The possibility of generalizing the metric tensor has been considered by many, including Einstein and others.".
- Nonsymmetric_gravitational_theory label "Nonsymmetric gravitational theory".
- Nonsymmetric_gravitational_theory sameAs Q716077.
- Nonsymmetric_gravitational_theory sameAs Nemszimmetrikus_gravitációelmélet.
- Nonsymmetric_gravitational_theory sameAs Teoria_da_gravitação_assimétrica.
- Nonsymmetric_gravitational_theory sameAs m.058y88.
- Nonsymmetric_gravitational_theory sameAs Несимметричные_теории_гравитации.
- Nonsymmetric_gravitational_theory sameAs Q716077.
- Nonsymmetric_gravitational_theory wasDerivedFrom Nonsymmetric_gravitational_theory?oldid=650895966.
- Nonsymmetric_gravitational_theory isPrimaryTopicOf Nonsymmetric_gravitational_theory.