On spin-driven inflation from inflation fields in General Relativity and COBE data

Author: Andrade, L.¹

Source: Astrophysics and Space Science, Volume 294, Numbers 3-4, December 2004 , pp. 213-217(5)

Publisher: Springer

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Abstract:

Obukhov spin-driven inflation in general relativity is extended to include inflation fields. A de Sitter phase solution is obtained and new slow-rolling conditions for the spin potential are obtained. The spin potential reduces to Obukhov result at the present epoch of the Universe where the spin density is low with comparison to the Early Universe spin densities. A relation between the spin density energy and the temperature fluctuation can be obtained which allow us to determine the spin density energy in terms of the COBE data for temperature fluctuations.

Document Type: Research article

DOI: 10.1007/s10509-004-5359-6

Affiliations: 1: Departamento de Física Teórica, Instituto de Física, UERJ, Rua São Fco, Rio de Janeiro, Brazil, Email: garcia@dft.if.uerj.br