超轻标量场与宇宙结构的增长
Ultra-Light Scalar Fields and the Growth of Structure in the Universe
摘要:
质量在m=10^{-33} eV和m=10^{-22} eV之间的超轻标量场可以影响宇宙结构的生长。我们确定了不同的制度在超轻标量场的演化,它们如何影响宇宙的膨胀率,以及它们如何影响宇宙学扰动的增长率。我们发现了一些有趣的效应,讨论它们如何在早期宇宙的现实场景中出现,并评论它们如何被观察到。
英文摘要:
Ultra-light scalar fields, with masses of between m=10^{-33} eV and m=10^{-22} eV, can affect the growth of structure in the Universe. We identify the different regimes in the evolution of ultra-light scalar fields, how they affect the expansion rate of the universe and how they affect the growth rate of cosmological perturbations. We find a number of interesting effects, discuss how they might arise in realistic scenarios of the early universe and comment on how they might be observed.
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