Cosmological solution through gravitational decoupling in Brans-Dicke gravity

被引：5
作者：
Sharif, M. [1 ]
Majid, Amal [1 ]
机构：
[1] Univ Punjab, Dept Math, Quaid E Azam Campus, Lahore 54590, Pakistan
来源：
PHYSICA SCRIPTA | 2021年 / 96卷 / 04期
关键词：
brans-dicke theory; gravitational decoupling; cosmology; UNIVERSE; MAPS;
D O I：
10.1088/1402-4896/abe00e
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
In this paper, we compute an anisotropic cosmological solution through a minimal geometric deformation on a non-static spherical spacetime in the framework of self-interacting Brans-Dicke theory. The transformation of the radial component decouples the field equations into two arrays such that the influence of the anisotropic source is limited to one set only. We use FLRW universe model to obtain a solution of the system governed by the isotropic matter source. For this purpose, power-law models of the scale factor as well as massive scalar field are assumed while isotropic pressure and density are related via barotropic equation of state. The decoupling function, appearing in the other set, is evaluated through the conservation equation of the anisotropic source. Finally, we investigate the physical behavior, viability and stability of the extended FLRW solution for different values of the equation of state parameter. It is concluded that the solution is viable and stable for the massless scalar field and the radiation dominated universe.
引用
收藏
页数：15
相关论文
共 56 条
[1]   Sound speeds, cracking and the stability of self-gravitating anisotropic compact objects [J].
Abreu, H. ;
Hernandez, H. ;
Nunez, L. A. .
CLASSICAL AND QUANTUM GRAVITY, 2007, 24 (18) :4631-4645
[2]   A preference for a non-zero neutrino mass from cosmological data [J].
Allen, SW ;
Schmidt, RW ;
Bridle, SL .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2003, 346 (02) :593-600
[3]   Searching for a cosmological preferred axis: Union2 data analysis and comparison with other probes [J].
Antoniou, I. ;
Perivolaropoulos, L. .
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2010, (12)
[4]   First-year Wilkinson Microwave Anisotropy Probe (WMAP) observations:: Preliminary maps and basic results [J].
Bennett, CL ;
Halpern, M ;
Hinshaw, G ;
Jarosik, N ;
Kogut, A ;
Limon, M ;
Meyer, SS ;
Page, L ;
Spergel, DN ;
Tucker, GS ;
Wollack, E ;
Wright, EL ;
Barnes, C ;
Greason, MR ;
Hill, RS ;
Komatsu, E ;
Nolta, MR ;
Odegard, N ;
Peiris, HV ;
Verde, L ;
Weiland, JL .
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 2003, 148 (01) :1-27
[5]   MACHS PRINCIPLE AND A RELATIVISTIC THEORY OF GRAVITATION [J].
BRANS, C ;
DICKE, RH .
PHYSICAL REVIEW, 1961, 124 (03) :925-&
[6]   Gravitational decoupling in cosmology [J].
Cedeno, Francisco X. Linares ;
Contreras, Ernesto .
PHYSICS OF THE DARK UNIVERSE, 2020, 28
[7]   A STUDY OF BRANS-DICKE THEORY IN FRW-MODEL [J].
CHAKRABORTY, S ;
SHAH, MF .
ASTROPHYSICS AND SPACE SCIENCE, 1995, 226 (01) :73-78
[8]   Role of Brans-Dicke Theory with or without Self-Interacting Potential in Cosmic Acceleration [J].
Chakraborty, Writambhara ;
Debnath, Ujjal .
INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS, 2009, 48 (01) :232-247
[9]   Probing the anisotropic local Universe and beyond with SNe Ia data [J].
Colin, Jacques ;
Mohayaee, Roya ;
Sarkar, Subir ;
Shafieloo, Arman .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2011, 414 (01) :264-271
[10]   A flat Universe from high-resolution maps of the cosmic microwave background radiation [J].
de Bernardis, P ;
Ade, PAR ;
Bock, JJ ;
Bond, JR ;
Borrill, J ;
Boscaleri, A ;
Coble, K ;
Crill, BP ;
De Gasperis, G ;
Farese, PC ;
Ferreira, PG ;
Ganga, K ;
Giacometti, M ;
Hivon, E ;
Hristov, VV ;
Iacoangeli, A ;
Jaffe, AH ;
Lange, AE ;
Martinis, L ;
Masi, S ;
Mason, PV ;
Mauskopf, PD ;
Melchiorri, A ;
Miglio, L ;
Montroy, T ;
Netterfield, CB ;
Pascale, E ;
Piacentini, F ;
Pogosyan, D ;
Prunet, S ;
Rao, S ;
Romeo, G ;
Ruhl, JE ;
Scaramuzzi, F ;
Sforna, D ;
Vittorio, N .
NATURE, 2000, 404 (6781) :955-959
123456