https://scholars.lib.ntu.edu.tw/handle/123456789/634013
標題: | Evolution of perturbation and power spectrum in a two-component ultralight axionic universe | 作者: | Yi-Hsiung Hsu TZI-HONG CHIUEH |
關鍵字: | astro-ph.CO; astro-ph.CO | 公開日期: | 14-十二月-2020 | 卷: | 103 | 期: | 10 | 來源出版物: | Phys. Rev. D 103, 103516 (2021) | 摘要: | The evolution of cosmic perturbations in a two-component ultralight axionic universe is investigated. We present the first spectral computation of perturbations in multi-component universes. A particular case composed of light extreme axions and free massive particles offers a possibility for the formation of very high-redshift massive galaxies, which are typically required to host massive early quasars. Our computation retains the information of perturbed velocities for individual axion components, opening a new avenue for setting up initial conditions for future axion dark matter simulations. |
描述: | 10 pages, 8 figures |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/634013 | ISSN: | 24700010 | DOI: | 10.1103/PhysRevD.103.103516 |
顯示於: | 物理學系 |
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