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

Christian G. Boehmer
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Abstract

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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Christian G. Boehmer. 2006-02-04. The Einstein static universe with torsion and the sign problem of the cosmological constant. https://doi.org/10.1088/0264-9381%2F21%2F4%2F025

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