观测约束韦尔型 f(Q,T)
IF 4.2 3区 物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS
Rahul Bhagat, B. Mishra
{"title":"观测约束韦尔型 f(Q,T)</mml:math","authors":"Rahul Bhagat,&nbsp;B. Mishra","doi":"10.1016/j.astropartphys.2024.103011","DOIUrl":null,"url":null,"abstract":"<div><p>Using the cosmological date sets, the cosmological parameters are constrained in this paper, with well known phantom behavioural Hubble parameter. To understand the dynamics of the Weyl type <span><math><mrow><mi>f</mi><mrow><mo>(</mo><mi>Q</mi><mo>,</mo><mi>T</mi><mo>)</mo></mrow></mrow></math></span> gravity, functional form of <span><math><mrow><mi>f</mi><mrow><mo>(</mo><mi>Q</mi><mo>,</mo><mi>T</mi><mo>)</mo></mrow></mrow></math></span> has been introduced, where <span><math><mi>Q</mi></math></span> and <span><math><mi>T</mi></math></span> respectively represents the nonmetricity scalar that depends on the Weyl vector <span><math><mrow><mo>(</mo><mi>Q</mi><mo>=</mo><mo>−</mo><mn>6</mn><msup><mrow><mi>w</mi></mrow><mrow><mn>2</mn></mrow></msup><mo>)</mo></mrow></math></span> and trace of energy–momentum tensor. Using the constrained values of the parameters, the other geometrical parameters are analysed and the accelerating behaviour has been shown. The dynamical parameters and energy conditions are also analysed. Further to get the complete evolutionary behaviour of the Universe, the dynamical system analysis has been performed.</p></div>","PeriodicalId":55439,"journal":{"name":"Astroparticle Physics","volume":"163 ","pages":"Article 103011"},"PeriodicalIF":4.2000,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Observational constrained Weyl type f(Q,T) gravity cosmological model and the dynamical system analysis\",\"authors\":\"Rahul Bhagat,&nbsp;B. Mishra\",\"doi\":\"10.1016/j.astropartphys.2024.103011\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Using the cosmological date sets, the cosmological parameters are constrained in this paper, with well known phantom behavioural Hubble parameter. To understand the dynamics of the Weyl type <span><math><mrow><mi>f</mi><mrow><mo>(</mo><mi>Q</mi><mo>,</mo><mi>T</mi><mo>)</mo></mrow></mrow></math></span> gravity, functional form of <span><math><mrow><mi>f</mi><mrow><mo>(</mo><mi>Q</mi><mo>,</mo><mi>T</mi><mo>)</mo></mrow></mrow></math></span> has been introduced, where <span><math><mi>Q</mi></math></span> and <span><math><mi>T</mi></math></span> respectively represents the nonmetricity scalar that depends on the Weyl vector <span><math><mrow><mo>(</mo><mi>Q</mi><mo>=</mo><mo>−</mo><mn>6</mn><msup><mrow><mi>w</mi></mrow><mrow><mn>2</mn></mrow></msup><mo>)</mo></mrow></math></span> and trace of energy–momentum tensor. Using the constrained values of the parameters, the other geometrical parameters are analysed and the accelerating behaviour has been shown. The dynamical parameters and energy conditions are also analysed. Further to get the complete evolutionary behaviour of the Universe, the dynamical system analysis has been performed.</p></div>\",\"PeriodicalId\":55439,\"journal\":{\"name\":\"Astroparticle Physics\",\"volume\":\"163 \",\"pages\":\"Article 103011\"},\"PeriodicalIF\":4.2000,\"publicationDate\":\"2024-07-16\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Astroparticle Physics\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0927650524000884\",\"RegionNum\":3,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ASTRONOMY & ASTROPHYSICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Astroparticle Physics","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0927650524000884","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ASTRONOMY & ASTROPHYSICS","Score":null,"Total":0}
引用次数: 0

摘要

利用宇宙学日期集,本文对宇宙学参数进行了约束,其中包括众所周知的幻影行为哈勃参数。为了理解韦尔型 f(Q,T) 引力的动力学,本文引入了 f(Q,T) 的函数形式,其中 Q 和 T 分别代表取决于韦尔向量(Q=-6w2)和能动量张量迹线的非度量标量。利用这些参数的约束值,对其他几何参数进行了分析,并展示了加速行为。同时还分析了动力学参数和能量条件。此外,为了获得宇宙的完整演化行为,还进行了动力学系统分析。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Observational constrained Weyl type f(Q,T) gravity cosmological model and the dynamical system analysis

Using the cosmological date sets, the cosmological parameters are constrained in this paper, with well known phantom behavioural Hubble parameter. To understand the dynamics of the Weyl type f(Q,T) gravity, functional form of f(Q,T) has been introduced, where Q and T respectively represents the nonmetricity scalar that depends on the Weyl vector (Q=6w2) and trace of energy–momentum tensor. Using the constrained values of the parameters, the other geometrical parameters are analysed and the accelerating behaviour has been shown. The dynamical parameters and energy conditions are also analysed. Further to get the complete evolutionary behaviour of the Universe, the dynamical system analysis has been performed.

求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
Astroparticle Physics
Astroparticle Physics 地学天文-天文与天体物理
CiteScore
8.00
自引率
2.90%
发文量
41
审稿时长
79 days
期刊介绍: Astroparticle Physics publishes experimental and theoretical research papers in the interacting fields of Cosmic Ray Physics, Astronomy and Astrophysics, Cosmology and Particle Physics focusing on new developments in the following areas: High-energy cosmic-ray physics and astrophysics; Particle cosmology; Particle astrophysics; Related astrophysics: supernova, AGN, cosmic abundances, dark matter etc.; Gravitational waves; High-energy, VHE and UHE gamma-ray astronomy; High- and low-energy neutrino astronomy; Instrumentation and detector developments related to the above-mentioned fields.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信