Anisotropic behavior of dark energy models in fractal cosmology

被引:14
|
作者
Hossienkhani, H. [1 ]
Yousefi, H. [2 ]
Azimi, N. [3 ]
机构
[1] Islamic Azad Univ, Dept Phys, Hamedan Brunch, Hamadan, Iran
[2] Hamedan Univ Technol, Dept Sci, Hamadan 65155, Iran
[3] Islamic Azad Univ, Hamedan Branch, Dept Math, Hamadan, Iran
关键词
Anisotropic universe; fractal cosmology; ghost DE; generalized ghost DE; Statefinder diagram; spherical collapse; linear perturbation; BARYON ACOUSTIC-OSCILLATIONS; PROBE WMAP OBSERVATIONS; CURRENT-ALGEBRA; CONSTRAINTS; INSTABILITY; STATEFINDER; CONSTANT; UNIVERSE; U(1); SUPERNOVAE;
D O I
10.1142/S0219887818502006
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We study effects of anisotropy (although low) on the ghost and generalized ghost dark energy (DE) models in the framework of fractal cosmology. We obtain the equation of state parameter, omega(DE), the deceleration parameter, and the evolution equation of the ghost and generalized ghost dark energy. We find that, in both models, omega(DE) cannot cross the phantom line and eventually the universe approaches a de-Sitter phase of expansion. We show that the anisotropy effects on ghost and generalized ghost dark energy (GDE) in fractal cosmology correspond to Lambda CDM limit on the statefinder plane. We evaluate the anisotropy effects on both the linear perturbation and the spherical collapse from the DE models and compare them with the results of the DE of the Friedmann- Robertson-Walker and Lambda CDM models. We also show that in ghost and generalized ghost cosmologies, the growth factor g(a) rise front the values for an Lambda CDM universe. Finally, we constrain the model parameters by using the maximum likelihood analysis and a combined dataset of baryon acoustic oscillation (BAO) and OHD.
引用
收藏
页数:23
相关论文
共 50 条
  • [21] Cosmology and Dark Energy
    Astier, Pierre
    2007 EUROPHYSICS CONFERENCE ON HIGH ENERGY PHYSICS, PTS 1-12, 2008, 110
  • [22] Dynamical Properties of Dark Energy Models in Fractal Universe
    Shahzad, Muhammad Umair
    Iqbal, Ayesha
    Jawad, Abdul
    SYMMETRY-BASEL, 2019, 11 (09):
  • [23] Interacting ghost dark energy models in the higher dimensional cosmology
    Sadeghi, J.
    Khurshudyan, M.
    Farahani, H.
    INTERNATIONAL JOURNAL OF MODERN PHYSICS D, 2016, 25 (14):
  • [24] COSMOLOGY Dark matter and dark energy
    Caldwell, Robert
    Kamionkowski, Marc
    NATURE, 2009, 458 (7238) : 587 - 589
  • [25] DYNAMICAL BEHAVIOR OF INTERACTING DARK ENERGY IN LOOP QUANTUM COSMOLOGY
    Xiao, Kui
    Zhu, Jian-Yang
    INTERNATIONAL JOURNAL OF MODERN PHYSICS A, 2010, 25 (26): : 4993 - 5007
  • [26] Anisotropic dark energy models with constant deceleration parameter
    Suresh Kumar
    C. P. Singh
    General Relativity and Gravitation, 2011, 43 : 1427 - 1442
  • [27] Anisotropic dark energy models with constant deceleration parameter
    Kumar, Suresh
    Singh, C. P.
    GENERAL RELATIVITY AND GRAVITATION, 2011, 43 (05) : 1427 - 1442
  • [28] Current constraints on anisotropic and isotropic dark energy models
    Amirhashchi, Hassan
    Amirhashchi, Soroush
    PHYSICAL REVIEW D, 2019, 99 (02)
  • [29] Anisotropic cosmological models with perfect fluid and dark energy
    Saha, B
    CHINESE JOURNAL OF PHYSICS, 2005, 43 (06) : 1035 - 1043
  • [30] Bianchi type III models with anisotropic dark energy
    Akarsu, Oezguer
    Kilinc, Can Battal
    GENERAL RELATIVITY AND GRAVITATION, 2010, 42 (04) : 763 - 775