Tensor–vector–scalar gravity

Tensor–vector–scalar gravity (TeVeS), developed by <a href="/facts/Jacob_Bekenstein/v3euhJYF">Jacob Bekenstein</a> in 2004, is a relativistic generalization of <a href="/facts/Mordehai_Milgrom/cyqvKDY1">Mordehai Milgrom</a>'s <a href="/facts/Modified_Newtonian_dynamics/3kenEm7h">Modified Newtonian dynamics</a> (MOND) paradigm.
The main features of TeVeS can be summarized as follows:

<ul><li>As it is derived from the <a href="/facts/Action_principle/NhWS2Mts">action principle</a>, TeVeS respects <a href="/facts/Conservation_laws/6g1Ay2FR">conservation laws</a>;</li>
<li>In the <a href="/facts/Weak-field_approximation/mbwlg5GW">weak-field approximation</a> of the spherically symmetric, static solution, TeVeS reproduces the MOND acceleration formula;</li>
<li>TeVeS avoids the problems of earlier attempts to generalize MOND, such as <a href="/facts/Superluminal/tpFg6JNd">superluminal</a> propagation;</li>
<li>As it is a relativistic theory it can accommodate <a href="/facts/Gravitational_lens/LmxzvLs8">gravitational lensing</a>.</li></ul>
The theory is based on the following ingredients:

<ul><li>A unit <a href="/facts/Vector_field/ccFNuPPp">vector field</a>;</li>
<li>A dynamical <a href="/facts/Scalar_field/8MtPTGob">scalar field</a>;</li>
<li>A nondynamical scalar field;</li>
<li>A matter <a href="/facts/Lagrangian_(field_theory)/p9BCUz57">Lagrangian</a> constructed using an alternate <a href="/facts/Metric_(general_relativity)/lJoCMdve">metric</a>;</li>
<li>An arbitrary dimensionless function.</li></ul>
These components are combined into a relativistic <a href="/facts/Lagrangian_density/p9BCUz57">Lagrangian density</a>, which forms the basis of TeVeS theory.

Tensor–vector–scalar gravity open-in-new

Tensor–vector–scalar gravity