Stochastic gravitational-wave background from axion-monodromy oscillons in string theory during preheating
Stochastic gravitational-wave background from axion-monodromy oscillons in string theory during preheating
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DOI：
10.1103/physrevd.100.063516
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发表时间：
2019-05
影响因子：
5
通讯作者：
Y. Sang;Q. Huang
中科院分区：
文献类型：
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作者：
Y. Sang;Q. Huang
轴子单值性是弦紧化中的一种普遍现象。研究了轴子单值暴胀在预热过程中引力波背景的产生。通过用伪谱方法进行格点模拟，我们发现在渐近线性的预热过程中产生了显著的单峰随机引力波背景，|ϕ|在轴子单值暴胀和尖点势中，这可能使我们能够通过引力波探索弦紧化。
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 pseudospectral methods, we find that significant single-peak stochastic gravitational-wave backgrounds are generated during preheating for asymptotic linear |ϕ| and ϕ2/3 potentials in axion monodromy inflation and cuspy potentials. This may allow us to explore string compactifications through gravitational waves.