大质量标量-张量引力作用下核坍缩超新星的数值研究
Numerical studies on core collapse supernova in self-interacting massive scalar-tensor gravity
摘要：
我们用标量张量理论研究了具有大质量自相互作用标量场的恒星核坍缩。在这些理论中，在恒星核心坍缩过程中可能会产生强烈的长寿命逆啁啾信号，这为我们提供了几个潜在的吸烟枪签名，可以使用当前的地面探测器发现。结果表明，在标量场的势场中存在自相互作用可以显著地抑制自发标量化和非标引力波辐射的振幅。此外，由于自相互作用的这种抑制是频率依赖的，并且可以在LIGO/Virgo的敏感波段中辨别。因此，在用引力波探测约束标量-张量耦合参数时，应考虑自相互作用。或者，如果探测到这样的反引力波信号，那么人们就可以推断出自我相互作用的存在。
英文摘要：
We investigate stellar core collapse in scalar-tensor theory with a massive self-interacting scalar field. In these theories, strong long-lived inverse chirp signals could be induced during the stellar core collapse, which provides us with several potential smoking-gun signatures that could be found using current ground-based detectors. We show that the existence of self-interaction in the potential of the scalar field can significantly suppress spontaneous scalarization and the amplitude of the monopole gravitational-wave radiation. Moreover, this suppression due to self-interaction is frequency dependent and may be discernible in LIGO/Virgo's sensitive band. Therefore, self-interaction should be considered when constraining scalar-tensor coupling parameters with gravitational-wave detections. Alternatively, if such monopole gravitational-wave signals are detected, then one may be able to infer the presence of self-interaction.
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