具有非光滑标度因子的论域的翘曲积方法
Warped product approach to universe with non-smooth scale factor
摘要：
在Lorentzian弯曲产物的框架下，我们研究了Friedmann-Robertson-Walker宇宙学模型，研究了与宇宙演化中的多重不连续性相关的非光滑曲率.特别地，我们通过引入天体物理现象学中辐射-物质和物质-λ相变的双不连续性，分析了空间平坦的Friedmann-Robertson-Walker宇宙的非光滑特征.
英文摘要：
In the framework of Lorentzian warped products, we study the Friedmann-Robertson-Walker cosmological model to investigate non-smooth curvatures associated with multiple discontinuities involved in the evolution of the universe. In particular we analyze non-smooth features of the spatially flat Friedmann-Robertson-Walker universe by introducing double discontinuities occurred at the radiation-matter and matter-lambda phase transitions in astrophysical phenomenology.
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