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- W2840688400 abstract "In this paper, we apply the method of reducing the dynamics of FRW cosmological models with a barotropic form of the equation of state to the dynamical system of the Newtonian type to detect the finite scale factor singularities and the finite-time singularities. In this approach all information concerning the dynamics of the system is contained in a diagram of the potential function V(a) of the scale factor. Singularities of the finite scale factor make themselves manifest by poles of the potential function. In our approach the different types of singularities are represented by critical exponents in the power-law approximation of the potential. The classification can be given in terms of these exponents. We have found that the pole singularity can mimic an inflation epoch. We demonstrate that the cosmological singularities can be investigated in terms of the critical exponents of the potential function of the cosmological dynamical systems. We assume that the general form of the model contains matter and some kind of dark energy which is parameterised by the potential. We distinguish singularities (by an ansatz involving the Lagrangian) of the pole type with the inflation and demonstrate that such a singularity can appear in the past." @default.
- W2840688400 created "2018-07-19" @default.
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- W2840688400 date "2018-07-01" @default.
- W2840688400 modified "2023-09-27" @default.
- W2840688400 title "Singularities in particle-like description of FRW cosmology" @default.
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- W2840688400 doi "https://doi.org/10.1140/epjc/s10052-018-6036-1" @default.
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