2000/08/27 by L. C. García de Andrade, L. C. Garcia de Andrade, de Andrade, L. C. Garcia
Physics and Astronomy · #Advanced Differential Geometry Research #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #gr-qc
paper · pdf · doi:10.48550/arxiv.gr-qc/0008064
Revised version accepted in Physics Letters B
arxiv created 2000/10/11 · arxiv updated 2009/11/30
Two metric perturbations in Einstein-Cartan cosmology are examined.The first case is the scalar mode perturbation of de Sitter metric in Einstein-Cartan cosmology.In this case small perturbations of de Sitter metric shows that this metric is unstable for a universe with spin-torsion density and dilaton fields.In the second case we show that the Friedmann metric in the same space is also unstable under the small perturbations.