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Flat universe with decaying cosmological constant

Regular Article

Abstract

We have investigated the Robertson-Walker cosmological model with decaying vacuum density. We considered a special variation law in which the vacuum density Λ is proportional to the n-th power of the Hubble parameter H, i.e., ΛH n (where n is a constant) (Phys. Rev. D 58, 043506 (1998)). Physical, kinematical and statefinder parameters are evaluated and their behaviors are discussed. It can be seen that the values of statefinders resemble the ΛCDM model and, so, the model is in agreement with recent observations.

Keywords

Dark Energy Cosmological Constant Hubble Parameter Deceleration Parameter Holographic Dark Energy 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Società Italiana di Fisica and Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  1. 1.Department of MathematicsGovt. Model Science CollegeRewaIndia

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