Abstract
We investigate the effects of scale-free statistics in Friedman-Robertson-Walker cosmology, in a toy model which considers a matter distribution P(k)∼k-γ, with 2<γ<3. Then we address the consequences on dynamics by using the kinematical parameters, namely the cosmographic parameters (Visser M., Phys. Rev. D, 78 (2008) 063501), i.e.H(t) (Hubble parameter), q(t) (deceleration parameter), j(t) (jerk parameter) and s(t) (snap parameter) for the so-called cosmographic test (see the paper by Visser). We show that the scale-free additive background seems able to explain the origin of dark energy giving a statistical interpretation of the cosmological overcoming the fine-tuning and the coincidence problems. After this, a consistent comparison with data by a Supernovae Ia test shows that the model behaves well at z≪1.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
