Gravitation and Electromagnetism as Geometrical Objects of a Riemann-Cartan Spacetime Structure

Details Gravitation and Electromagnetism as Geometrical Objects of a Riemann-Cartan Spacetime Structure Gravitation and Electromagnetism as Geometrical Objects of a Riemann-Cartan Spacetime Structure

2011-09-24

arxiv.org/abs/1109.5271v3

Physics

Mathematical Physics

In this version some few misprints have been corrected and a remark has changed place. Paper will appear in Advances in Applie

Scientific paper

In this paper we first show that any coupled system consisting of a gravitational plus a free electromagnetic field can be described geometrically in the sense that both Maxwell equations and Einstein equation having as source term the energy-momentum of the electromagnetic field can be derived from a geometrical Lagrangian proportional to the scalar curvature R of a particular kind of Riemann-Cartan spacetime structure, where those fields are identified as geometrical objects of the structure. We show moreover that the contorsion tensor of the particular Riemann-Cartan spacetime structure of our theory encodes the same information as the one contained in Chern-Simons term that is proportional to the spin density of the electromagnetic field. Next we show that by adding to the geometrical Lagrangian a term describing the interaction of a electromagnetic current with a general electromagnetic plus the gravitational field and a term describing the matter carrier of the current we get Maxwell equations with source term and Einstein equation having as source term the sum of the energy-momentum tensors of the electromagnetic and matter terms. Finally modeling by dust charged matter the carrier of the electromagnetic current we get the Lorentz force equation. Moreover, we prove that our theory is gauge invariant. We also briefly discuss our reasons for the present enterprise.

Affiliated with

Also associated with

No associations

Rating

Gravitation and Electromagnetism as Geometrical Objects of a Riemann-Cartan Spacetime Structure does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Gravitation and Electromagnetism as Geometrical Objects of a Riemann-Cartan Spacetime Structure, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gravitation and Electromagnetism as Geometrical Objects of a Riemann-Cartan Spacetime Structure will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-602669