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arXiv · 1905.00371

Stochastic Gravitational-Wave Background from Axion-Monodromy Oscillons in String Theory During Preheating

Yu Sang·Qing-Guo Huang
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Abstract

Axion monodromy is a generic phenomenon in string compactifications. We investigate the production of gravitational-wave background from axion monodromy inflation during preheating. By performing lattice simulations using pseudo-spectral methods, we find that significant single-peak stochastic gravitational-wave backgrounds are generated during preheating for asymptotic linear $|ϕ|$ and $ϕ^{2/3}$ potentials in axion monodromy inflation and cuspy potentials. This may allow us to explore string compactifications through gravitational waves.

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Yu Sang, Qing-Guo Huang. 2019-09-10. Stochastic Gravitational-Wave Background from Axion-Monodromy Oscillons in String Theory During Preheating. https://doi.org/10.1103/physrevd.100.063516

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