Journal
PHYSICAL REVIEW D
Volume 103, Issue 10, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.103.103516
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Funding
- Ministry of Science and Technology (MOST) of Taiwan [MOST 107-2119-M-002-036-MY3]
- NTU Core Consortium project [NTU-CC-108L893401, NTU-CC-108L893402]
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The study investigates the evolution of cosmic perturbations in a two-component ultralight axionic universe, presenting the first spectral computation of perturbations in multicomponent universes. A particular case consisting of light extreme axions and free massive particles may lead to the formation of very high-redshift massive galaxies, potentially hosting massive early quasars. The computation retains information of perturbed velocities for individual axion components, offering a new avenue for setting up initial conditions for future axion dark matter simulations.
The evolution of cosmic perturbations in a two-component ultralight axionic universe is investigated. We present the first spectral computation of perturbations in multicomponent 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.
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