Geodesic
The relationship between the Einstein and Yang--Mills equations
Izvestiâ vysših učebnyh zavedenij. Matematika, no. 9 (2009), pp. 69-74

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In this paper we prove that special requirements to Yang–Mills equations on a 4-dimensional conformally connected manifold allow one to reduce them to a system of Einstein equations and additional ones that bind components of the energy-impulse tensor. We propose an algorithm that gives conditions for the embedding of the metric of the gravitational field into a special (uncharged) Yang–Mills conformally connected manifold. As an application of the algorithm, we prove that the metric of any Einstein space and the Robertson–Walker metric are embeddable into the specified manifold.
Keywords: curvature of the connection, Robertson–Walker metric, Hodge operator, energy-impulse tensor, Bianchi identities, Einstein equations, Yang–Mills equations, 4-dimensional conformally connected manifold. 
@article{IVM_2009_9_a6,
     author = {L. N. Krivonosov and V. A. Luk'yanov},
     title = {The relationship between the {Einstein} and {Yang--Mills} equations},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {69--74},
     publisher = {mathdoc},
     number = {9},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2009_9_a6/}
}
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L. N. Krivonosov; V. A. Luk'yanov. The relationship between the Einstein and Yang--Mills equations. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 9 (2009), pp. 69-74. http://geodesic.mathdoc.fr/item/IVM_2009_9_a6/