21 research outputs found

    Spinor Field in Bianchi type-I Universe: regular solutions

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    Self-consistent solutions to the nonlinear spinor field equations in General Relativity has been studied for the case of Bianchi type-I (B-I) space-time. It has been shown that, for some special type of nonliearity the model provides regular solution, but this singularity-free solutions are attained at the cost of broken dominant energy condition in Hawking-Penrose theorem. It has also been shown that the introduction of Λ\Lambda-term in the Lagrangian generates oscillations of the B-I model, which is not the case in absence of Λ\Lambda term. Moreover, for the linear spinor field, the Λ\Lambda term provides oscillatory solutions, those are regular everywhere, without violating dominant energy condition. Key words: Nonlinear spinor field (NLSF), Bianch type -I model (B-I), Λ\Lambda term PACS 98.80.C CosmologyComment: RevTex, 21 page
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