Cosmological imprint of an energy component with general equation of state
Cosmological imprint of an energy component with general equation of state
复制标题
DOI：
10.1103/physrevlett.80.1582
复制
发表时间：
1998-02-23
影响因子：
8.6
通讯作者：
Steinhardt, PJ
中科院分区：
文献类型：
--
作者：
Caldwell, RR;Dave, R;Steinhardt, PJ
我们研究的可能性，宇宙的能量密度的一个重要组成部分有一个状态方程不同于物质，辐射，或宇宙常数（λ）。一个例子是在势中演化的宇宙标量场，但我们的处理更一般。包括这一部分改变了宇宙的演化，与当前的观测结果吻合得很好。与Lambda不同，它动态地演变并产生波动，在微波背景各向异性和质量功率谱上留下独特的印记。
We examine the possibility that a significant component of the energy density of the Universe has an equation of state different from that of matter, radiation, or cosmological constant (Lambda). An example is a cosmic scalar field evolving in a potential, but our treatment is more general. Including this component alters cosmic evolution in a way that fits current observations well. Unlike Lambda, it evolves dynamically and develops fluctuations, leaving a distinctive imprint on the microwave background anisotropy and mass power spectrum.