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Torsion as a source of expansion in a Bianchi type-I universe in the self-consistent Einstein-Cartan theory of a perfect fluid with spin densityIt is shown that a generalized (or 'power law') inflationary phase arises naturally and inevitably in a simple (Bianchi type-I) anisotropic cosmological model in the self-consistent Einstein-Cartan gravitation theory with the improved stress-energy-momentum tensor with the spin density of Ray and Smalley (1982, 1983). This is made explicit by an analytical solution of the field equations of motion of the fluid variables. The inflation is caused by the angular kinetic energy density due to spin. The model further elucidates the relationship between fluid vorticity, the angular velocity of the inertially dragged tetrads, and the precession of the principal axes of the shear ellipsoid. Shear is not effective in damping the inflation.
Document ID
19870061052
Document Type
Reprint (Version printed in journal)
Authors
Bradas, James C. (U.S. Army, Research Development and Engineering Center Redstone Arsenal; Alabama, University, Hunt, United States)
Fennelly, Alphonsus J. (Teledyne Brown Engineering; Alabama, University Huntsville, United States)
Smalley, Larry L. (NASA Marshall Space Flight Center; Alabama, University Huntsville, United States)
Date Acquired
August 13, 2013
Publication Date
April 15, 1987
Publication Information
Publication: Physical Review D - Particles and Fields, 3rd Series
Volume: 35
ISSN: 0556-2821
Subject Category
ASTROPHYSICS
Distribution Limits
Public
Copyright
Other