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    题名: Conformally related Einstein-Langevin equations for metric fluctuations in stochastic gravity
    作者: Satin, Seema;Cho, H. T.;Hu, Bei Lok
    日期: 2016-09-08
    上传时间: 2018-11-08 12:11:47 (UTC+8)
    出版者: American Physical Society
    摘要: For a conformally coupled scalar field we obtain the conformally related Einstein-Langevin equations, using appropriate transformations for all the quantities in the equations between two conformally related spacetimes. In particular, we analyze the transformations of the influence action, the stress energy tensor, the noise kernel and the dissipation kernel. In due course the fluctuation-dissipation relation is also discussed. The analysis in this paper thereby facilitates a general solution to the Einstein-Langevin equation once the solution of the equation in a simpler, conformally related spacetime is known. For example, from the Minkowski solution of Martín and Verdaguer, those of the Einstein-Langevin equations in conformally flat spacetimes, especially for spatially flat Friedmann-Robertson-Walker models, can be readily obtained.
    關聯: Physical Review D 94, p.064019
    DOI: 10.1103/PhysRevD.94.064019
    显示于类别:[物理學系暨研究所] 期刊論文

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