Browsing 08. Факультеты by Subject "Dark energy"

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Browsing 08. Факультеты by Subject "Dark energy"

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  • Kuralay Esmakhanova; Nurgissa Myrzakulov; Gulgasyl Nugmanova; Yerlan Myrzakulov; Leonid Chechin; Ratbay Myrzakulov (2013-04-18)
    One of the greatest challenges in cosmology today is to determine the nature of dark energy, the sourse of the observed present acceleration of the Universe. Besides the vacuum energy, various dark energy models have ...
  • Ratbay Myrzakulov (2013-04-22)
    Modified teleparallel gravity theory with the torsion scalar has recently gained a lot of attention as a possible candidate of dark energy.We perform a thorough reconstruction analysis on the so-called F(T ) models, where ...
  • Antonio Pasqua; A. Khodam-Mohammadi; Mubasher Jamil; R. Myrzakulov (2013-04-22)
    Motivated by the holographic principle, it has been suggested that the dark energy density may be inversely proportional to the area A of the event horizon of the universe. However, such a model would have a causality problem. ...
  • Myrzakulov Ratbay; Saez-Gomez Diego; Tureanu Anca (2012-06-30)
    In the context of the so-called Gauss–Bonnet gravity, where the gravitational action includes function of the Gauss–Bonnet invariant, we study cosmological solutions, especially the well-known ΛCDM model. It is shown ...
  • Ratbay Myrzakulov; Diego Sáez-Gómez; Anca Tureanu (2013-04-22)
    In the context of the so-called Gauss–Bonnet gravity, where the gravitational action includes function of the Gauss–Bonnet invariant, we study cosmological solutions, especially the well-known ΛCDM model. It is shown ...
  • P. Y. T s y b a; I.I. Kulnazarov; K.K. Yerzhanov; R. Myrzakulov (2013-05-14)
    In this paper, we consider three types of k-essence. These k-essence models were presented in the parametric forms. The exact analytical solutions of the corresponding equa-tions of motion are found. It is shown that these ...
  • P.Yu.Tsyba; I.I. Kulnazarov; K.K. Yerzhanov; R. Myrzakulov (2013-04-18)
    In this paper, we consider three types of k-essence. These k-essence models were presented in the parametric forms. The exact analytical solutions of the corresponding equations of motion are found. It is shown that these ...
  • P.Yu.Tsyba; I.I. Kulnazarov; K.K. Yerzhanov; R. Myrzakulov (2013-06-21)
    In this paper, we consider three types of k-essence. These k-essence models were presented in the parametric forms. The exact analytical solutions of the corresponding equations of motion are found. It is shown that these ...
  • P.Y.Tsyba; I.I.Kulnazarov; K.K.Yerzhanov; R.Myrzakulov (2012-06-30)
    In this paper, we consider three types of k-essence. These k-essence models were presented in the parametric forms. The exact analytical solutions of the corresponding equations of motion are found. It is shown that these ...
  • Shuvendu Chakraborty; Ujjal Debnath; Mubasher Jamil; Ratbay Myrzakulov (2013-04-22)
    In this work, we have calculated the deceleration parameter, statefinder parameters and EoS parameters for different dark energy models with variable G correction in homogeneous, isotropic and non-flat universe for ...

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