The Einstein static universe with torsion and the sign problem of the cosmological constant

Details The Einstein static universe with torsion and the sign problem of the cosmological constant The Einstein static universe with torsion and the sign problem of the cosmological constant

2003-10-10

arxiv.org/abs/gr-qc/0310058v5

Class.Quant.Grav. 21 (2004) 1119-1124

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

8 pages, LaTeX; minor layout changes, typos corrected, one new equation, new reference [5], completed reference [13], two refe

Scientific paper

10.1088/0264-9381/21/4/025

In the field equations of Einstein-Cartan theory with cosmological constant a static spherically symmetric perfect fluid with spin density satisfying the Weyssenhoff restriction is considered. This serves as a rough model of space filled with (fermionic) dark matter. From this the Einstein static universe with constant torsion is constructed, generalising the Einstein Cosmos to Einstein-Cartan theory. The interplay between torsion and the cosmological constant is discussed. A possible way out of the cosmological constant's sign problem is suggested.

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