Browsing by Author "Chervon, S.V."

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    Nonlinear sigma model for inflation scenarios.II
    (2015-01-17) Chervon, S.V.
    In this paper the self –gravitating nonlinear sigma model is considered in the context of inflation scenarios as an alternative to the self-interacting scalar field theory. The complete set of new exact solutions for the two-component sigma model in the frame work of spatially flat friendmann- Robertson- Walker and de sitter universes is obtained.
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    Nonlinear sigma models for inflation scenarios
    (2014-11-23) Chervon, S.V.
    In this paper new implementation from nonlinear sigma models are presented for cosmological inflationary scenarios. It is shown that the scalar field models with any form of a potential of self –interaction can be derived from the appropriate nonlinear sigma model. The complete set of new exact salutation for the two- component sigma model in the spatially flat Friedmann-Robertson-Walker and de sitter universes is obtained.