Science China Physics, Mechanics and Astronomy

, Volume 56, Issue 6, pp 1220–1226

Constraining the lattice fluid dark energy from SNe Ia, BAO and OHD

Authors

    • National Astronomical ObservatoriesChinese Academy of Sciences
    • Graduate University of Chinese Academy of Sciences
  • YiChao Li
    • National Astronomical ObservatoriesChinese Academy of Sciences
    • Graduate University of Chinese Academy of Sciences
  • ChangJun Gao
    • National Astronomical ObservatoriesChinese Academy of Sciences
    • Kavli Institute for Theoretical Physics ChinaChinese Academy of Sciences
Article

DOI: 10.1007/s11433-013-5080-y

Cite this article as:
Duan, X., Li, Y. & Gao, C. Sci. China Phys. Mech. Astron. (2013) 56: 1220. doi:10.1007/s11433-013-5080-y

Abstract

Sanchez and Lacombe have developed a lattice fluid theory based on a well-defined statistical mechanical model. Taking the lattice fluid as a candidate of dark energy, we investigate the cosmic evolution of this fluid. Using the combined observational data of Type Ia Supernova (SNe Ia) Union2.1, Baryon Acoustic Oscillations (BAO) data from 6dFGS, SDSS and WiggleZ survey, and Observational Hubble Data (OHD), we find the best fit value of the parameters: A = −0.3 ± 0.2(1σ) ± 0.4(2σ) ± 0.8(3σ) and Ωm = 0.31 ± 0.02(1σ) ± 0.05(2σ) ± 0.07(3σ). The cosmological implications of the model are presented.

Keywords

dark energylattice fluidstatefinder

Copyright information

© Science China Press and Springer-Verlag Berlin Heidelberg 2013