Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
1996-02-08
Acta Phys.Polon.B27:2685-2694,1996
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
13 pages, RevTex
Scientific paper
We discuss the choice of the Lagrangian in the Poincar\'e gauge theory of
gravity. Drawing analogies to earlier de Sitter gauge models, we point out the
possibility of deriving the Einstein-Cartan Lagrangian {\it without}
cosmological term from a {\it modified} quadratic curvature invariant of {\it
topological} type.
Hehl Friedrich W.
~Obukhov Yuri N.
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