Variational principle for a perfect fluid in a space with torsion

Details Variational principle for a perfect fluid in a space with torsion Variational principle for a perfect fluid in a space with torsion

Jul 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975dobel..19..599t&link_type=abstract

Akademiia Nauk BSSR, Doklady, vol. 19, July 1975, p. 599-601. In Russian.

Astronomy and Astrophysics

Astrophysics

8

Gravitation Theory, Ideal Fluids, Metric Space, Relativistic Theory, Torsion, Variational Principles, Astronomical Models, Astrophysics, Cosmology, Tetrad Theory

Scientific paper

On the basis of a variational principle that is a direct covariant generalization of the corresponding special-relativistic procedure, a general definition is given for a perfect fluid interacting in a torsion field in the framework of both the Einstein-Cartan and tetradic theories of gravitation. It is shown that the principal characteristic of this definition is the choice of the perfect fluid's canonical energy-momentum tensor as the sources of the gravitational field. This is substantially different from the usual general-relativistic representation of the perfect fluid's metric energy-momentum tensor as the sources of the field.

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