Exploring the string axiverse and parity violation in gravity with gravitational waves
Exploring the string axiverse and parity violation in gravity with gravitational waves
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DOI：
10.1142/s0218271818500967
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发表时间：
2017-08
影响因子：
2.2
通讯作者：
Daiske Yoshida;J. Soda
中科院分区：
文献类型：
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作者：
Daiske Yoshida;J. Soda
我们证明了引力波的参量共振是由轴子相干振荡引起的，而引力波的圆偏振是由Chern-Simons耦合引起的。然而，我们从未在GWs的数据中观察到这些签名。利用这一事实，我们给出了严格的限制陈-西蒙斯耦合常数[公式：见正文]和丰富的轻弦轴子。特别是，我们改进了许多数量级的当前界限[公式：见正文]。
We show that the parametric resonance of gravitational waves (GWs) occurs due to the axion coherent oscillation and the circular polarization of GWs is induced by the Chern–Simons coupling. However, we have never observed these signatures in the data of GWs. Using this fact, we give stringent constraints on the Chern–Simons coupling constant [Formula: see text] and the abundance of the light string axion. In particular, we improved the current bound [Formula: see text] by many orders of magnitude.