{"title":"Late-time constraints on homogeneous and isotropic FLRW cosmology with torsion","authors":"","doi":"10.1016/j.aop.2024.169813","DOIUrl":null,"url":null,"abstract":"<div><div>The present work deals with observational data analysis of four different models of homogeneous and isotropic Friedmann–Lemaitre–Robertson–Walker (FLRW) cosmology with torsion, where the torsion function is described by a scalar function <span><math><mrow><mi>ϕ</mi><mrow><mo>(</mo><mi>t</mi><mo>)</mo></mrow></mrow></math></span> associated with the spin of the matter. It has been found that among the four models, the third model, where the torsion function is proportional to Hubble parameter as well as power law of matter density, best fits the observational data. Further, the evolution of the torsion function reveals that torsion was subdominant relative to matter energy density during the matter-dominated era. However, torsion gradually becomes dominant following the transition into the current late-time accelerating phase. It plays a pivotal role as an alternative to dark energy, thereby accounting for the present cosmic acceleration.</div></div>","PeriodicalId":8249,"journal":{"name":"Annals of Physics","volume":null,"pages":null},"PeriodicalIF":3.0000,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Annals of Physics","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0003491624002203","RegionNum":3,"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}
引用次数: 0
Abstract
The present work deals with observational data analysis of four different models of homogeneous and isotropic Friedmann–Lemaitre–Robertson–Walker (FLRW) cosmology with torsion, where the torsion function is described by a scalar function associated with the spin of the matter. It has been found that among the four models, the third model, where the torsion function is proportional to Hubble parameter as well as power law of matter density, best fits the observational data. Further, the evolution of the torsion function reveals that torsion was subdominant relative to matter energy density during the matter-dominated era. However, torsion gradually becomes dominant following the transition into the current late-time accelerating phase. It plays a pivotal role as an alternative to dark energy, thereby accounting for the present cosmic acceleration.
期刊介绍:
Annals of Physics presents original work in all areas of basic theoretic physics research. Ideas are developed and fully explored, and thorough treatment is given to first principles and ultimate applications. Annals of Physics emphasizes clarity and intelligibility in the articles it publishes, thus making them as accessible as possible. Readers familiar with recent developments in the field are provided with sufficient detail and background to follow the arguments and understand their significance.
The Editors of the journal cover all fields of theoretical physics. Articles published in the journal are typically longer than 20 pages.