5,205 research outputs found
Dynamics of an Anisotropic Universe in Theory
Dynamics of an anisotropic universe is studied in gravity using a
rescaled functional . Three models have been constructed assuming a
power law expansion of the universe. Physical features of the models are
discussed. The model parameters are constrained from a dimensional analysis. It
is found from the work that, the model in the modified gravity can
favour quintessence and phantom phase.Comment: 16 pages, 4 figure
Cosmic Acceleration and Anisotropic models with Magnetic field
Plane symmetric cosmological models are investigated with or without any dark
energy components in the field equations. Keeping an eye on the recent
observational constraints concerning the accelerating phase of expansion of the
universe, the role of magnetic field is assessed. In the absence of dark energy
components, magnetic field can favour an accelerating model even if we take a
linear relationship between the directional Hubble parameters. In presence of
dark energy components in the form of a time varying cosmological constant, the
influence of magnetic field is found to be limited.Comment: 19 pages, 3 figures, submitted to EPJ plu
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