The Einstein static universe with torsion and the sign problem of the cosmological constant
نویسنده
چکیده
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. PACS numbers: 04.50.+h, 95.35.+d, 95.30-k E-mail: [email protected]
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