Some Models of Cyclic and Knot Universes

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dc.contributor.author K.R. Yesmakhanova
dc.contributor.author N. A. Myrzakulov
dc.contributor.author K. K. Yerzhanov
dc.contributor.author G.N. Nugmanova
dc.contributor.author N.S. Serikbayaev
dc.contributor.author R. Myrzakulov
dc.date.accessioned 2013-05-15T06:40:15Z
dc.date.available 2013-05-15T06:40:15Z
dc.date.issued 2013-05-15
dc.identifier.uri http://repository.enu.kz/jspui/handle/data/7909
dc.description enu.kz ru_RU
dc.description.abstract In this paper, we obtained a class of oscillatory, cyclic and knot type solutions from the non-linear Friedmann equations. This is performed by choosing specific forms of energy density and pressure of matter. All the expressions written here are in dimensionless form. We show that evolutionary path taken by the spatial coordinates in the model follow various knots, specifically trefoil and eight-knots. We provide several examples and plot relevant cosmological parameters in figures. Our cyclic models can be interpreted as a periodic cosmological model, such that early and late time acceleration are unified under the same mechanism. Finally we have presented some examples of knot universes for the Bianchi - I spacetime. ru_RU
dc.language.iso en ru_RU
dc.subject knot universe ru_RU
dc.subject cyclic universe ru_RU
dc.subject models ru_RU
dc.title Some Models of Cyclic and Knot Universes ru_RU
dc.type Article ru_RU


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