{"title":"Brans-Dicke理论中的体粘度和颗粒生成","authors":"G. Singh, A. Beesham","doi":"10.1071/PH98107","DOIUrl":null,"url":null,"abstract":"The efiect of bulk viscosity on the evolution of the spatially ∞at Friedmann{Lemaitre{ Robertson{Walker (FLRW) models in the context of open thermodynamical systems, which allow for particle creation, is analysed within the framework of Brans{Dicke (BD) theory. The BD fleld equations are modifled with the incorporation of a creation pressure and bulk viscous stress. A class of physically plausible models has been taken into consideration. The behaviour of the particle number density and bulk viscosity is discussed with the evolution of the Brans{Dicke scalar fleld.","PeriodicalId":170873,"journal":{"name":"Australian Journal of Physics","volume":"17 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1999-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"30","resultStr":"{\"title\":\"Bulk viscosity and particle creation in Brans—Dicke theory\",\"authors\":\"G. Singh, A. Beesham\",\"doi\":\"10.1071/PH98107\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The efiect of bulk viscosity on the evolution of the spatially ∞at Friedmann{Lemaitre{ Robertson{Walker (FLRW) models in the context of open thermodynamical systems, which allow for particle creation, is analysed within the framework of Brans{Dicke (BD) theory. The BD fleld equations are modifled with the incorporation of a creation pressure and bulk viscous stress. A class of physically plausible models has been taken into consideration. The behaviour of the particle number density and bulk viscosity is discussed with the evolution of the Brans{Dicke scalar fleld.\",\"PeriodicalId\":170873,\"journal\":{\"name\":\"Australian Journal of Physics\",\"volume\":\"17 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1999-11-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"30\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Australian Journal of Physics\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1071/PH98107\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Australian Journal of Physics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1071/PH98107","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Bulk viscosity and particle creation in Brans—Dicke theory
The efiect of bulk viscosity on the evolution of the spatially ∞at Friedmann{Lemaitre{ Robertson{Walker (FLRW) models in the context of open thermodynamical systems, which allow for particle creation, is analysed within the framework of Brans{Dicke (BD) theory. The BD fleld equations are modifled with the incorporation of a creation pressure and bulk viscous stress. A class of physically plausible models has been taken into consideration. The behaviour of the particle number density and bulk viscosity is discussed with the evolution of the Brans{Dicke scalar fleld.
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