Chern-Simons axion gravity and neutrino oscillations
Chern-Simons axion gravity and neutrino oscillations
复制标题
陈-西蒙斯轴子引力和中微子振荡
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通讯作者：
L. Visinelli
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作者：
G. Lambiase;L. Mastrototaro;L. Visinelli
我们研究了在随机引力波背景（SGWB）的影响下，在广义相对论被额外的Chern-Simons（CS）项修正的情况下，中微子振荡的修正。假设暗物质晕是以轴子的形式存在，CS耦合会改变地球上中微子振荡的模式，直到在某些频率范围内完全抑制。与此同时，晕中的SGWB可以在很窄的频率范围内激发轴子衰变为引力子，从而在增强的SGWB应变中产生潜在的可检测共振峰。一个一致的图像将需要这些特征可能出现在超新星的中微子探测，引力波探测器，以及旨在寻找银河系晕中轴子的实验中。
We investigate the modifications in the neutrino flavor oscillations under the influence of a stochastic gravitational wave background (SGWB), in a scenario in which General Relativity is modified by an additional Chern-Simons (CS) term. Assuming that the dark matter halo is in the form of axions, the CS coupling modifies the pattern of the neutrino flavor oscillations at Earth up to a total suppression in some frequency range. At the same time, the SGWB in the halo could stimulate the axion decay into gravitons over a narrow frequency range, leading to a potentially detectable resonance peak in the enhanced SGWB strain. A consistent picture would require these features to potentially show up in neutrino detection from supernovae, gravitational wave detectors, and experiments aimed at the search for axions in the Milky Way halo.