论文标题
限制Ligo轴线暗物质的重力耦合
Constraining the gravitational coupling of axion dark matter at LIGO
论文作者
论文摘要
斧头 - 重力Chern-simons耦合的动机是有动机的，但相对较弱，部分是由于重力测量的难度。我们研究了这种耦合中chi rigo重力波（GWS）的LIGO测量的灵敏度。当传播GW的频率与轴线暗物质场相干振荡的频率匹配时，可以刺激轴向引力量的轴衰减，从而共同增强GW。在Ligo上可以检测到这种共振峰，作为偏离chiring波形的偏差。由于所有观察到的GWS都会从乳白色（MW）轴晕中获得类似的共振增强，因此Ligo O1+O2观测值可能会对耦合产生最强的约束，至少对于轴质量$ $ $ M_A = 5 \ times 10^{-13} - 13} - 13} - 5 \ 5 \ 5 \ 5 \ times 10^times 10^^{-12} $ 12} $ ev。在整个过程中，我们还强调了轴突磁场有限连贯性和ANSATZ的相关性，而ANSATZ将GWS的前后传播分开。结果，不可观察到Chern-Simons耦合的均等违反GWS无法观察到。
The axion-gravity Chern-Simons coupling is well motivated but is relatively weakly constrained, partly due to difficult measurements of gravity. We study the sensitivity of LIGO measurements of chirping gravitational waves (GWs) on such coupling. When the frequency of the propagating GW matches with that of the coherent oscillation of axion dark matter field, the decay of axions into gravitons can be stimulated, resonantly enhancing the GW. Such a resonance peak can be detected at LIGO as a deviation from the chirping waveform. Since all observed GWs will undergo similar resonant enhancement from the Milky-Way (MW) axion halo, LIGO O1+O2 observations can potentially provide the strongest constraint on the coupling, at least for the axion mass $m_a = 5 \times 10^{-13} - 5 \times 10^{-12}$ eV. Along the course, we also emphasize the relevance of the finite coherence of axion fields and the ansatz separating forward and backward propagations of GWs. As a result, the parity violation of the Chern-Simons coupling is not observable from chirping GWs.
