Plebanski action

From Wikipedia, the free encyclopedia

General relativity and supergravity in all dimensions meet each other at a common assumption:

Any configuration space can be coordinatized by gauge fields $A^i_a$ , where the index $i$ is a Lie algebra index and $a$ is a spatial manifold index.

Using these assumptions one can construct an effective field theory in low energies for both. In this form the action of general relativity can be written in the form of the Plebanski action which can be constructed using the Palatini action to derive Einstein's field equations of general relativity.

The form of the Plebanski action is:

$S_{Plebanski} = \int_{\Sigma \times R} \epsilon_{ijkl} B^{ij} \wedge F^{kl} (A^i_a) + \phi_{ijkl} B^{ij} \wedge B^{kl}$

where $i, j, l, k$ are internal indices, $F$ is a curvature on $S O (3,1)$ Connection (mathematics) variables (the gauge fields $A^i_a$ . The symbol $φ i j k l$ is the Lagrangian multiplier and $ε i j k l$ is the antisymmetric symbol valued over $S O (3,1)$ .

Retrieved from "http://en.wikipedia.org../../../p/l/e/Plebanski_action.html"

Categories: Theories of gravitation | Variational formalism of general relativity

Plebanski action

From Wikipedia, the free encyclopedia

Views

Navigation

interaction

Search