Tensor–vector–scalar gravity
Relativistic generalization of Mordehai Milgrom's MOND paradigm / From Wikipedia, the free encyclopedia
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Not to be confused with Scalar–tensor–vector gravity or Bi-scalar tensor vector gravity.
Tensor–vector–scalar gravity (TeVeS),[1] developed by Jacob Bekenstein in 2004, is a relativistic generalization of Mordehai Milgrom's Modified Newtonian dynamics (MOND) paradigm.[2][3]
The main features of TeVeS can be summarized as follows:
- As it is derived from the action principle, TeVeS respects conservation laws;
- In the weak-field approximation of the spherically symmetric, static solution, TeVeS reproduces the MOND acceleration formula;
- TeVeS avoids the problems of earlier attempts to generalize MOND, such as superluminal propagation;
- As it is a relativistic theory it can accommodate gravitational lensing.
The theory is based on the following ingredients:
- A unit vector field;
- A dynamical scalar field;
- A nondynamical scalar field;
- A matter Lagrangian constructed using an alternate metric;
- An arbitrary dimensionless function.
These components are combined into a relativistic Lagrangian density, which forms the basis of TeVeS theory.