New modified mimetic gravity

被引:48
|
作者
Momeni, Davood [1 ]
Altaibayeva, Aziza
Myrzakulov, Ratbay
机构
[1] Eurasian Natl Univ, Eurasian Int Ctr Theoret Phys, Astana 010008, Kazakhstan
关键词
Modified gravity; torsion; cosmology; ENERGY CONDITIONS; ACCELERATING UNIVERSE; EXTENDED THEORIES; COSMOLOGY; QUANTUM;
D O I
10.1142/S0219887814500911
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
A modified Mimetic gravity (MMG) is proposed as a generalization of general relativity. The model contains a physical metric which is the function of an auxiliary (unphysical) metric and a Lyra's metric. We construct different kinds of conformally invariant models in different levels of the expansion parameter.. This model phenomenologically has been extended to higher-order forms. Cosmology of a certain class of such models has been investigated in detail. A cosmological solution has been proposed in inhomogeneous form of scalar field. For homogeneous case, energy conditions are widely investigated. We have shown that the system evaluated at intervals shorter than a certain time Tc meets all the energy conditions.
引用
收藏
页数:13
相关论文
共 50 条
  • [41] Cosmological perturbations in mimetic Horndeski gravity
    Arroja, Frederico
    Bartolo, Nicola
    Karmakar, Purnendu
    Matarrese, Sabino
    JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2016, (04):
  • [42] Is limiting curvature mimetic gravity an effective polymer quantum gravity?
    Bodendorfer, Norbert
    Mele, Fabio M.
    Muench, Johannes
    CLASSICAL AND QUANTUM GRAVITY, 2018, 35 (22)
  • [43] New classes of modified teleparallel gravity models
    Bahamonde, Sebastian
    Bohmer, Christian G.
    Krssak, Martin
    PHYSICS LETTERS B, 2017, 775 : 37 - 43
  • [44] New measures to test modified gravity cosmologies
    Matsumoto, Jiro
    Okumura, Teppei
    Sasaki, Misao
    JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2020, (07):
  • [45] NEW COSMOLOGICAL SOLUTIONS IN NONLOCAL MODIFIED GRAVITY
    Dimitrijevic, Ivan
    Dragovich, Branko
    Grujic, Jelena
    Rakic, Zoran
    ROMANIAN JOURNAL OF PHYSICS, 2013, 58 (5-6): : 550 - 559
  • [46] Extensions of two-field mimetic gravity
    Zheng, Yunlong
    Rao, Haomin
    JOURNAL OF HIGH ENERGY PHYSICS, 2023, 2023 (04)
  • [47] Hamiltonian analysis of Mimetic gravity with higher derivatives
    Zheng, Yunlong
    JOURNAL OF HIGH ENERGY PHYSICS, 2021, 2021 (01)
  • [48] Mimetic massive gravity: beyod linear approximation
    Chamseddine, Ali H.
    Mukhanov, Viatcheslav
    JOURNAL OF HIGH ENERGY PHYSICS, 2018, (06):
  • [49] Inflation in mimetic f (R, T) gravity
    Bhattacharjee, Snehasish
    NEW ASTRONOMY, 2022, 90
  • [50] Mimetic f(T) teleparallel gravity and cosmology
    Behrouz Mirza
    Fatemeh Oboudiat
    General Relativity and Gravitation, 2019, 51