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Is Our Universe Accelerating Dynamics Fractional Order?

[+] Author Affiliations
Caibin Zeng

South China University of Technology, Guangzhou, China

YangQuan Chen

University of California - Merced, Merced, CA

Igor Podlubny

Technical University of Košice, Košice, Slovakia

Paper No. DETC2015-46216, pp. V009T07A020; 5 pages
doi:10.1115/DETC2015-46216
From:
  • ASME 2015 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 9: 2015 ASME/IEEE International Conference on Mechatronic and Embedded Systems and Applications
  • Boston, Massachusetts, USA, August 2–5, 2015
  • Conference Sponsors: Design Engineering Division, Computers and Information in Engineering Division
  • ISBN: 978-0-7918-5719-9
  • Copyright © 2015 by ASME

abstract

In this paper, a fractional dynamics approach is used to characterize the observed accelerating expansion of the universe. We claim that the evolution of accelerating expansion obeys an α-exponential function, which is the fundamental solution of linear fractional order dynamical equation. We find that the Hubble constant is 67.8807, 68.2546, and 67.9119 for all redshift z < 1.5, z < 1, and z < 0.1 based on the dataset collected by the Supernova Cosmology Project. Furthermore, we verify that the expansion rate of our universe is speeding up and actually obeys a Mittag-Leffler law.

Copyright © 2015 by ASME

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