{"title":"具有流体混合物的 f(T)引力理论中的各向异性宇宙学模型","authors":"V. J. Dagwal","doi":"10.1007/s12648-024-03368-0","DOIUrl":null,"url":null,"abstract":"<p>This study presents anisotropic cosmological models in<i> f</i>(<i>T</i>) theory of gravity with mixture of fluids. The <span>\\(f\\left( T \\right)\\)</span> theory of gravity is the generalization of the Teleparallel theory of gravity, where <i>T</i> is the torsion scalar. In order to obtain a deterministic solution of the field equations, I have assumed that the two sources of the perfect fluid and dark energy interact minimally with separate conservation of their energy–momentum tensors as well EoS parameter of the perfect fluid is assumed to be constant. In this paper, I have investigated dark energy models such as quintessence, chaplygin gas, cosmological constant with assist of <i>f</i>(<i>T</i>) gravity. Role of the cosmological constant <span>\\(\\Lambda\\)</span> term in the evolution of the anisotropic universe has been studied. The diagnostics parameters <span>\\(r(z)\\)</span>, <span>\\(s(z)\\)</span> and <span>\\(om(z)\\)</span> are investigated. I have discussed observational fitting concerning.</p>","PeriodicalId":584,"journal":{"name":"Indian Journal of Physics","volume":null,"pages":null},"PeriodicalIF":1.6000,"publicationDate":"2024-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Anisotropic cosmological models in f(T) theory of gravity with mixture of fluids\",\"authors\":\"V. J. Dagwal\",\"doi\":\"10.1007/s12648-024-03368-0\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>This study presents anisotropic cosmological models in<i> f</i>(<i>T</i>) theory of gravity with mixture of fluids. The <span>\\\\(f\\\\left( T \\\\right)\\\\)</span> theory of gravity is the generalization of the Teleparallel theory of gravity, where <i>T</i> is the torsion scalar. In order to obtain a deterministic solution of the field equations, I have assumed that the two sources of the perfect fluid and dark energy interact minimally with separate conservation of their energy–momentum tensors as well EoS parameter of the perfect fluid is assumed to be constant. In this paper, I have investigated dark energy models such as quintessence, chaplygin gas, cosmological constant with assist of <i>f</i>(<i>T</i>) gravity. Role of the cosmological constant <span>\\\\(\\\\Lambda\\\\)</span> term in the evolution of the anisotropic universe has been studied. The diagnostics parameters <span>\\\\(r(z)\\\\)</span>, <span>\\\\(s(z)\\\\)</span> and <span>\\\\(om(z)\\\\)</span> are investigated. I have discussed observational fitting concerning.</p>\",\"PeriodicalId\":584,\"journal\":{\"name\":\"Indian Journal of Physics\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.6000,\"publicationDate\":\"2024-08-27\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Indian Journal of Physics\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://doi.org/10.1007/s12648-024-03368-0\",\"RegionNum\":4,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"PHYSICS, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Indian Journal of Physics","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1007/s12648-024-03368-0","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"PHYSICS, MULTIDISCIPLINARY","Score":null,"Total":0}
Anisotropic cosmological models in f(T) theory of gravity with mixture of fluids
This study presents anisotropic cosmological models in f(T) theory of gravity with mixture of fluids. The \(f\left( T \right)\) theory of gravity is the generalization of the Teleparallel theory of gravity, where T is the torsion scalar. In order to obtain a deterministic solution of the field equations, I have assumed that the two sources of the perfect fluid and dark energy interact minimally with separate conservation of their energy–momentum tensors as well EoS parameter of the perfect fluid is assumed to be constant. In this paper, I have investigated dark energy models such as quintessence, chaplygin gas, cosmological constant with assist of f(T) gravity. Role of the cosmological constant \(\Lambda\) term in the evolution of the anisotropic universe has been studied. The diagnostics parameters \(r(z)\), \(s(z)\) and \(om(z)\) are investigated. I have discussed observational fitting concerning.
期刊介绍:
Indian Journal of Physics is a monthly research journal in English published by the Indian Association for the Cultivation of Sciences in collaboration with the Indian Physical Society. The journal publishes refereed papers covering current research in Physics in the following category: Astrophysics, Atmospheric and Space physics; Atomic & Molecular Physics; Biophysics; Condensed Matter & Materials Physics; General & Interdisciplinary Physics; Nonlinear dynamics & Complex Systems; Nuclear Physics; Optics and Spectroscopy; Particle Physics; Plasma Physics; Relativity & Cosmology; Statistical Physics.