论文标题
flrw+标量宇宙中的可解决势能,适合IA超新星数据类型
Solvable potentials in a FLRW+Scalar universe and Fits to type Ia supernovae data
论文作者
论文摘要
在具有宇宙标量背景的宇宙中分析了FLRW方程,该宇宙在空间上均匀但时间变化。提出了对这种宇宙中组合动力学的一些可解决势能,这与标量动力学是能量动量保护的结果是一致的。发现某些电势可为IA超新星数据类型提供非常好的拟合,标量的动力学和势能为暗物质和暗能量提供了源。随着宇宙的扩展,标量降低了潜力,随着时间变化的宇宙学常数的作用,对文献中最近讨论的场景进行了建模。
FLRW equations are analyzed in a universe with a cosmic scalar background that is spatially uniform but time-varying. Some solvable potentials to the combined dynamics in such a universe are presented, that are consistent with the scalar dynamics as a consequence of energy momentum conservation. Certain potentials are found to provide very good fits to type Ia supernovae data, with the kinetic and potential energies of the scalar providing the source for dark matter and dark energy. The scalar rolls down the potential as the universe expands with the potential playing the role of a time-varying cosmological constant, modeling a scenario recently discussed in the literature.