Taub-NUT vacuum
Encyclopedia
The Taub-NUT vacuum is an exact solution
to Einstein's equations, a model universe
formulated in the framework of general relativity
that is homogeneous
but anisotropic. It is based on a solution published by Abraham Haskel Taub
in 1951.
Exact solutions in general relativity
In general relativity, an exact solution is a Lorentzian manifold equipped with certain tensor fields which are taken to model states of ordinary matter, such as a fluid, or classical nongravitational fields such as the electromagnetic field....
to Einstein's equations, a model universe
Universe
The Universe is commonly defined as the totality of everything that exists, including all matter and energy, the planets, stars, galaxies, and the contents of intergalactic space. Definitions and usage vary and similar terms include the cosmos, the world and nature...
formulated in the framework of general relativity
General relativity
General relativity or the general theory of relativity is the geometric theory of gravitation published by Albert Einstein in 1916. It is the current description of gravitation in modern physics...
that is homogeneous
Homogeneity (physics)
In general, homogeneity is defined as the quality or state of being homogeneous . For instance, a uniform electric field would be compatible with homogeneity...
but anisotropic. It is based on a solution published by Abraham Haskel Taub
Abraham Haskel Taub
Abraham Haskel Taub was a distinguished American mathematician and physicist, well known for his important contributions to the early development of general relativity, as well as differential geometry and differential equations...
in 1951.