"Isothermal" density perturbations in an axion-dominated inflationary universe.
"Isothermal" density perturbations in an axion-dominated inflationary universe.
复制标题
轴子主导的暴胀宇宙中的“等温”密度扰动。
DOI：
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发表时间：
1985
期刊：
影响因子：
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通讯作者：
M. Turner
中科院分区：
文献类型：
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作者：
D. Seckel;M. Turner
在宇宙的膨胀模型，这是轴子占主导地位的绝热和等温密度扰动出现。我们指出，等温扰动可以是更重要的比绝热扰动，并讨论了一个模型，这是这种情况。随着等温扰动的频谱密度扰动时，结构的形成开始是平坦的，我们简要地讨论了这一事实的影响。等温波动的幅度不能太大，这对暴胀模型提供了另一个限制。
In inflationary models of the Universe which are axion dominated both adiabatic and isothermal density perturbations arise. We point out that the isothermal perturbations can be more important than the adiabatic perturbations and discuss a model for which this is the case. With isothermal perturbations the spectrum of density perturbations when structure formation begins is flatter and we briefly discuss the implications of this fact. That the amplitude of isothermal fluctuations not be too large provides yet another constraint on models of inflation.