LRS Bianchi Type I Models with Anisotropic Dark Energy and Constant Deceleration Parameter

Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

20 pages, 10 figures. The revised, final version accepted for publication in General Relativity and Gravitation

Scientific paper

10.1007/s10714-009-0821-y

Locally rotationally symmetric (LRS) Bianchi Type I cosmological models are examined in the presence of dynamically anisotropic dark energy and perfect fluid. We assume that the dark energy (DE) is minimally interacting, has dynamical energy density, anisotropic equation of state parameter (EoS). The conservation of the energy-momentum tensor of the DE is assumed to consist of two separately additive conserved parts. A special law is assumed for the deviation from isotropic EoS, which is consistent with the assumption on the conservation of the energy-momentum tensor of the DE. Exact solutions of Einstein's field equations are obtained by assuming a special law of variation for the mean Hubble parameter, which yields a constant value of the deceleration parameter. Geometrical and kinematic properties of the models and the behaviour of the anisotropy of the dark energy has been carried out. The models give dynamically anisotropic expansion history for the universe that allows to fine tune the isotropization of the Bianchi metric, hence the CMB anisotropy.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

LRS Bianchi Type I Models with Anisotropic Dark Energy and Constant Deceleration Parameter does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with LRS Bianchi Type I Models with Anisotropic Dark Energy and Constant Deceleration Parameter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and LRS Bianchi Type I Models with Anisotropic Dark Energy and Constant Deceleration Parameter will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-259677

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.