学術雑誌論文 Nonlinear resonant oscillation of gravitational potential induced by ultralight axion in f (R) gravity

Aoki, Arata  ,  Soda, Jiro

96 ( 2 )  , p.023534 , 2017-07-26 , American Physical Society (APS)
ISSN:2470001024700029
内容記述
We study the ultralight axion dark matter with mass around 10-22 eV in f(R) gravity which might resolve the dark energy problem. In particular, we focus on the fact that the pressure of the axion field oscillating in time produces oscillations of gravitational potentials. We show that the oscillation of the gravitational potential is sensitive to the model of gravity. Remarkably, we find that the detectability of the oscillation through the gravitational wave detectors can be significantly enhanced due to the nonlinear resonance between the ultralight axion and the scalaron.
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http://www.lib.kobe-u.ac.jp/repository/90004281.pdf

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