Article

Science China Physics, Mechanics and Astronomy

, Volume 56, Issue 6, pp 1220-1226

First online:

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

  • XiaoXian DuanAffiliated withNational Astronomical Observatories, Chinese Academy of SciencesGraduate University of Chinese Academy of Sciences Email author 
  • , YiChao LiAffiliated withNational Astronomical Observatories, Chinese Academy of SciencesGraduate University of Chinese Academy of Sciences
  • , ChangJun GaoAffiliated withNational Astronomical Observatories, Chinese Academy of SciencesKavli Institute for Theoretical Physics China, Chinese Academy of Sciences

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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 Ω m = 0.31 ± 0.02(1σ) ± 0.05(2σ) ± 0.07(3σ). The cosmological implications of the model are presented.

Keywords

dark energy lattice fluid statefinder