Mapping between eras in scale-covariant gravity with a van der Waals cosmological source

被引:0
|
作者
Ribas, M. O. [1 ]
Bail, L. C. [1 ]
Devecchi, F. P. [2 ]
机构
[1] UTFPR, Dept Fis, BR-80230901 Curitiba, PR, Brazil
[2] UFPR, Dept Fis, BR-81531980 Curitiba, PR, Brazil
来源
关键词
Cosmology; noether;
D O I
10.1142/S0217751X23501403
中图分类号
O57 [原子核物理学、高能物理学];
学科分类号
070202 ;
摘要
In this paper, we apply the scale-covariant formalism established by Canuto et al. in order to connect different eras of fluid-driven universes. This technique depends on a scale function that can be adjusted by imposing different physical restrictions. In a previous work, Chaplygin fluid was considered as cosmological source; now a van der Waals constituent shows to be a consistent source to establish a mapping between an old decelerated-to-accelerated universe, ruled by Einstein equations, and an early universe, controlled by a modified gravitational theory. A similar situation emerges when a generalized Chaplygin fluid is considered. These cosmological properties are shown to be a direct consequence of an appropriate use of the scale-covariant technique, and can be seen as extensions of the original barotropic and plain Chaplygin cases.
引用
收藏
页数:10
相关论文
共 50 条
  • [1] Mapping between different cosmological eras in scale-covariant formalism
    Ribas, Marlos O.
    Devecchi, Fernando P.
    Kremer, Gilberto M.
    INTERNATIONAL JOURNAL OF MODERN PHYSICS A, 2020, 35 (07):
  • [2] MACHS PRINCIPLE, THE COSMOLOGICAL CONSTANT, AND THE SCALE-COVARIANT THEORY OF GRAVITY
    CANUTO, V
    HSIEH, SH
    ADAMS, PJ
    PHYSICAL REVIEW D, 1978, 18 (10): : 3577 - 3580
  • [3] ELECTRODYNAMICS IN SCALE-COVARIANT GRAVITY THEORY
    MANSFIELD, VN
    MALIN, S
    ASTRONOMY & ASTROPHYSICS, 1980, 89 (1-2) : 70 - 73
  • [4] METRIC-AFFINE SCALE-COVARIANT GRAVITY
    POBERII, EA
    GENERAL RELATIVITY AND GRAVITATION, 1994, 26 (10) : 1011 - 1054
  • [5] ASTROPHYSICAL TESTS OF SCALE-COVARIANT GRAVITY THEORIES
    MANSFIELD, VN
    MALIN, S
    ASTROPHYSICAL JOURNAL, 1980, 237 (01): : 349 - 354
  • [6] A Higher Dimensional Cosmological Model in a Scale-Covariant Theory of Gravitation
    Reddy, D. R. K.
    INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS, 2009, 48 (11) : 3044 - 3048
  • [7] Bianchi type VI cosmological models: a Scale-Covariant study
    Mohammad Zeyauddin
    Bijan Saha
    Astrophysics and Space Science, 2013, 343 : 445 - 450
  • [8] Bianchi type VI cosmological models: a Scale-Covariant study
    Zeyauddin, Mohammad
    Saha, Bijan
    ASTROPHYSICS AND SPACE SCIENCE, 2013, 343 (01) : 445 - 450
  • [9] A Higher Dimensional Cosmological Model in a Scale-Covariant Theory of Gravitation
    D. R. K. Reddy
    International Journal of Theoretical Physics, 2009, 48 : 3044 - 3048
  • [10] TILTED BIANCHI TYPE-V COSMOLOGICAL MODEL IN THE SCALE-COVARIANT THEORY
    BEESHAM, A
    ASTROPHYSICS AND SPACE SCIENCE, 1986, 125 (01) : 99 - 102