{"title":"（2+1）维Saez-Ballester引力标量张量理论中的两流体宇宙学模型","authors":"Praveen Kumar, G. S. Khadekar, V. Dagwal","doi":"10.1080/1726037X.2022.2079267","DOIUrl":null,"url":null,"abstract":"Abstract Two fluids cosmological models with matter and radiating source in (2 + 1)−dimensional Saez-Ballester scalar-tensor theory of gravitation are investigated. In the two-fluid model, one fluid represent the CMB radiation and another fluid represent the matter content of the universe. To get determinate solution of the field equations we have consider the relation between pressure and energy density of the matter field through the gamma law equation of state pm = (γ − 1)ρm . Some physical and geometric behaviour of the models are also discussed with the uses of mathematical software.","PeriodicalId":42788,"journal":{"name":"Journal of Dynamical Systems and Geometric Theories","volume":"20 1","pages":"91 - 114"},"PeriodicalIF":0.4000,"publicationDate":"2022-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Two Fluids Cosmological Model in (2+1)-Dimensional Saez-Ballester Scalar-Tensor Theory of Gravitation\",\"authors\":\"Praveen Kumar, G. S. Khadekar, V. Dagwal\",\"doi\":\"10.1080/1726037X.2022.2079267\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Abstract Two fluids cosmological models with matter and radiating source in (2 + 1)−dimensional Saez-Ballester scalar-tensor theory of gravitation are investigated. In the two-fluid model, one fluid represent the CMB radiation and another fluid represent the matter content of the universe. To get determinate solution of the field equations we have consider the relation between pressure and energy density of the matter field through the gamma law equation of state pm = (γ − 1)ρm . Some physical and geometric behaviour of the models are also discussed with the uses of mathematical software.\",\"PeriodicalId\":42788,\"journal\":{\"name\":\"Journal of Dynamical Systems and Geometric Theories\",\"volume\":\"20 1\",\"pages\":\"91 - 114\"},\"PeriodicalIF\":0.4000,\"publicationDate\":\"2022-01-02\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Dynamical Systems and Geometric Theories\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1080/1726037X.2022.2079267\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"MATHEMATICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Dynamical Systems and Geometric Theories","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1080/1726037X.2022.2079267","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MATHEMATICS","Score":null,"Total":0}
Two Fluids Cosmological Model in (2+1)-Dimensional Saez-Ballester Scalar-Tensor Theory of Gravitation
Abstract Two fluids cosmological models with matter and radiating source in (2 + 1)−dimensional Saez-Ballester scalar-tensor theory of gravitation are investigated. In the two-fluid model, one fluid represent the CMB radiation and another fluid represent the matter content of the universe. To get determinate solution of the field equations we have consider the relation between pressure and energy density of the matter field through the gamma law equation of state pm = (γ − 1)ρm . Some physical and geometric behaviour of the models are also discussed with the uses of mathematical software.
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