Nonlinear resonant oscillation of gravitational potential induced by ultralight axion in f(R) gravity

Nonlinear resonant oscillation of gravitational potential induced by ultralight axion in f(R)... 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. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review D American Physical Society (APS)

Nonlinear resonant oscillation of gravitational potential induced by ultralight axion in f(R) gravity

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Nonlinear resonant oscillation of gravitational potential induced by ultralight axion in f(R) gravity

Abstract

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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Publisher
The American Physical Society
Copyright
Copyright © © 2017 American Physical Society
ISSN
1550-7998
eISSN
1550-2368
D.O.I.
10.1103/PhysRevD.96.023534
Publisher site
See Article on Publisher Site

Abstract

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.

Journal

Physical Review DAmerican Physical Society (APS)

Published: Jul 15, 2017

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