{"title":"各向异性宇宙$f(\\mathcal{G},\\textit{T})$重力","authors":"M. Shamir","doi":"10.1155/2017/6378904","DOIUrl":null,"url":null,"abstract":"This paper is devoted to investigate the recently introduced $f(\\mathcal{G},\\textit{T})$ theory of gravity, where $\\mathcal{G}$ is the Gauss-Bonnet term, and ${\\textit{T}}$ is the trace of the energy-momentum tensor. For this purpose, anisotropic background is chosen and a power law $f(\\mathcal{G},\\textit{T})$ gravity model is used to find the exact solutions of field equations. In particular, a general solution is obtained which is further used to reconstruct some important solutions in cosmological contexts. The physical quantities like energy density, pressure, and equation of state parameter are calculated. A Starobinsky Like $f_2(\\textit{T})$ model is proposed which is used to analyze the behavior of universe for different values of equation of state parameter. It is concluded that presence of term $\\textit{T}$ in the bivariate function $f(\\mathcal{G},\\textit{T})$ may give many cosmologically important solutions of the field equations.","PeriodicalId":369778,"journal":{"name":"arXiv: General Physics","volume":"10 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2017-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"7","resultStr":"{\"title\":\"Anisotropic Universe in $f(\\\\mathcal{G},\\\\textit{T})$ Gravity\",\"authors\":\"M. Shamir\",\"doi\":\"10.1155/2017/6378904\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"This paper is devoted to investigate the recently introduced $f(\\\\mathcal{G},\\\\textit{T})$ theory of gravity, where $\\\\mathcal{G}$ is the Gauss-Bonnet term, and ${\\\\textit{T}}$ is the trace of the energy-momentum tensor. For this purpose, anisotropic background is chosen and a power law $f(\\\\mathcal{G},\\\\textit{T})$ gravity model is used to find the exact solutions of field equations. In particular, a general solution is obtained which is further used to reconstruct some important solutions in cosmological contexts. The physical quantities like energy density, pressure, and equation of state parameter are calculated. A Starobinsky Like $f_2(\\\\textit{T})$ model is proposed which is used to analyze the behavior of universe for different values of equation of state parameter. It is concluded that presence of term $\\\\textit{T}$ in the bivariate function $f(\\\\mathcal{G},\\\\textit{T})$ may give many cosmologically important solutions of the field equations.\",\"PeriodicalId\":369778,\"journal\":{\"name\":\"arXiv: General Physics\",\"volume\":\"10 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2017-05-12\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"7\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"arXiv: General Physics\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1155/2017/6378904\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"arXiv: General Physics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1155/2017/6378904","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Anisotropic Universe in $f(\mathcal{G},\textit{T})$ Gravity
This paper is devoted to investigate the recently introduced $f(\mathcal{G},\textit{T})$ theory of gravity, where $\mathcal{G}$ is the Gauss-Bonnet term, and ${\textit{T}}$ is the trace of the energy-momentum tensor. For this purpose, anisotropic background is chosen and a power law $f(\mathcal{G},\textit{T})$ gravity model is used to find the exact solutions of field equations. In particular, a general solution is obtained which is further used to reconstruct some important solutions in cosmological contexts. The physical quantities like energy density, pressure, and equation of state parameter are calculated. A Starobinsky Like $f_2(\textit{T})$ model is proposed which is used to analyze the behavior of universe for different values of equation of state parameter. It is concluded that presence of term $\textit{T}$ in the bivariate function $f(\mathcal{G},\textit{T})$ may give many cosmologically important solutions of the field equations.