dorsal/arxiv
View SchemaAn assessment of Evans' unified field theory II
| Authors | Friedrich W. Hehl, Yuri N. Obukhov |
|---|---|
| Categories | |
| ArXiv ID | physics/0703117 |
| URL | https://arxiv.org/abs/physics/0703117 |
| DOI | 10.1007/s10701-007-9188-7 |
| Journal | Found.Phys.38:38-46,2008 |
Abstract
Evans developed a classical unified field theory of gravitation and electromagnetism on the background of a spacetime obeying a Riemann-Cartan geometry. In an accompanying paper I, we analyzed this theory and summarized it in nine equations. We now propose a variational principle for Evans' theory and show that it yields two field equations. The second field equation is algebraic in the torsion and we can resolve it with respect to the torsion. It turns out that for all physical cases the torsion vanishes and the first field equation, together with Evans' unified field theory, collapses to an ordinary Einstein equation.
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"abstract": "Evans developed a classical unified field theory of gravitation and\nelectromagnetism on the background of a spacetime obeying a Riemann-Cartan\ngeometry. In an accompanying paper I, we analyzed this theory and summarized it\nin nine equations. We now propose a variational principle for Evans\u0027 theory and\nshow that it yields two field equations. The second field equation is algebraic\nin the torsion and we can resolve it with respect to the torsion. It turns out\nthat for all physical cases the torsion vanishes and the first field equation,\ntogether with Evans\u0027 unified field theory, collapses to an ordinary Einstein\nequation.",
"arxiv_id": "physics/0703117",
"authors": [
"Friedrich W. Hehl",
"Yuri N. Obukhov"
],
"categories": [
"physics.class-ph",
"gr-qc",
"physics.gen-ph"
],
"doi": "10.1007/s10701-007-9188-7",
"journal_ref": "Found.Phys.38:38-46,2008",
"title": "An assessment of Evans\u0027 unified field theory II",
"url": "https://arxiv.org/abs/physics/0703117"
},
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