{"title":"早期宇宙中的非平衡中微子谱","authors":"A. Dolgov, S. Hansen, D. Semikoz","doi":"10.1080/01422419808240878","DOIUrl":null,"url":null,"abstract":"Abstract In this talk we discuss the non-equilibrium corrections to the neutrino spectrum in the early Universe. We present the results of a numerical simulation of the set of kinetic equations for the neutrino distribution functions. The final values of the distortion of the energy densities are approximately 0.9∼ for ve and 0.4∼ for vμ and v r. This effect leads to an increase in the primordial 4He abundance of 1.4.10−-4.","PeriodicalId":264948,"journal":{"name":"Surveys in High Energy Physics","volume":"101 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1998-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Nonequilibrium neutrino spectra in the early universe\",\"authors\":\"A. Dolgov, S. Hansen, D. Semikoz\",\"doi\":\"10.1080/01422419808240878\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Abstract In this talk we discuss the non-equilibrium corrections to the neutrino spectrum in the early Universe. We present the results of a numerical simulation of the set of kinetic equations for the neutrino distribution functions. The final values of the distortion of the energy densities are approximately 0.9∼ for ve and 0.4∼ for vμ and v r. This effect leads to an increase in the primordial 4He abundance of 1.4.10−-4.\",\"PeriodicalId\":264948,\"journal\":{\"name\":\"Surveys in High Energy Physics\",\"volume\":\"101 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1998-11-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Surveys in High Energy Physics\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1080/01422419808240878\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Surveys in High Energy Physics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1080/01422419808240878","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Nonequilibrium neutrino spectra in the early universe
Abstract In this talk we discuss the non-equilibrium corrections to the neutrino spectrum in the early Universe. We present the results of a numerical simulation of the set of kinetic equations for the neutrino distribution functions. The final values of the distortion of the energy densities are approximately 0.9∼ for ve and 0.4∼ for vμ and v r. This effect leads to an increase in the primordial 4He abundance of 1.4.10−-4.
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