Limiting curvature mimetic gravity and its relation to Loop Quantum Cosmology

被引:15
|
作者
de Haro, Jaume [1 ]
Areste Salo, Llibert [1 ,2 ]
Pan, Supriya [3 ]
机构
[1] Univ Politecn Cataluna, Dept Matemat, Diagonal 647, E-08028 Barcelona, Spain
[2] Ludwig Maximilians Univ Munchen, Fak Phys, Theresienstr 37, D-80333 Munich, Germany
[3] Raiganj Surendranath Mahavidyalaya, Dept Math, Uttar Dinajpur 733134, W Bengal, India
关键词
Loop Quantum Cosmology; Mimetic gravity; Cosmological perturbations; GRAVITATIONAL COLLAPSE; INFLATIONARY UNIVERSE; SINGULARITIES; FLATNESS; HORIZON;
D O I
10.1007/s10714-019-2534-1
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Considering as usual that the underlying geometry of our universe is well described by the spatially flat Friedmann-Lemaitre-Robertson-Walker line element, we review how the background of holonomy corrected Loop Quantum Cosmology (LQC) could be obtained as a simple modified version of the mimetic gravity. We also analyze the scalar and tensor perturbations of this modified mimetic model, from which we find that at the level of tensor perturbations it is indistinguishable from General Relativity while at the level of scalar perturbations, the modified mimetic model, which has the same background as LQC, does not exhibit the same properties as LQC in the so-called deformed algebra approach.
引用
收藏
页数:14
相关论文
共 50 条
  • [21] Loop quantum cosmology and its gauge-covariant avatar: A weak curvature relationship
    Li, Bao-Fei
    Singh, Parampreet
    PHYSICAL REVIEW D, 2022, 106 (02)
  • [22] Loop Quantum Cosmology, Modified Gravity and Extra Dimensions
    Zhang, Xiangdong
    UNIVERSE, 2016, 2 (03)
  • [23] Emergence of the product of constant curvature spaces in loop quantum cosmology
    Dadhich, Naresh
    Joe, Anton
    Singh, Parampreet
    CLASSICAL AND QUANTUM GRAVITY, 2015, 32 (18)
  • [24] Superbounce and loop quantum cosmology ekpyrosis from modified gravity
    Oikonomou, V. K.
    ASTROPHYSICS AND SPACE SCIENCE, 2015, 359 (01) : 1 - 11
  • [25] Superbounce and loop quantum cosmology ekpyrosis from modified gravity
    V. K. Oikonomou
    Astrophysics and Space Science, 2015, 359
  • [26] Bouncing loop quantum cosmology in Gauss-Bonnet gravity
    Haro, J.
    Makarenko, A. N.
    Myagky, A. N.
    Odintsov, S. D.
    Oikonomou, V. K.
    PHYSICAL REVIEW D, 2015, 92 (12):
  • [27] Bouncing loop quantum cosmology from F(T) gravity
    Amoros, Jaume
    de Haro, Jaume
    Odintsov, Sergei D.
    PHYSICAL REVIEW D, 2013, 87 (10):
  • [28] Inflationary cosmology and quantization ambiguities in semiclassical loop quantum gravity
    Bojowald, M
    Lidsey, JE
    Mulryne, DJ
    Singh, P
    Tavakol, R
    PHYSICAL REVIEW D, 2004, 70 (04):
  • [29] Limiting curvature models of gravity
    Frolov, Valeri P.
    NUOVO CIMENTO C-COLLOQUIA AND COMMUNICATIONS IN PHYSICS, 2022, 45 (02):
  • [30] Emergence of Homogeneous and Isotropic Loop Quantum Cosmology from Loop Quantum Gravity: Lowest Order in h
    Lin, Chun-Yen
    CHINESE JOURNAL OF PHYSICS, 2015, 53 (06)