标题： 太阳系尺度以下引力波事件的宇宙学和核物理意义 显示英文标题

标题： Cosmology and nuclear-physics implications of a subsolar gravitational-wave event

摘要： 探测一个亚太阳质量的致密天体在物理学上将具有深远的影响，其影响范围取决于该天体的性质。 在这里，我们探讨了由LIGO-Virgo-KAGRA合作组织探测到的假定亚太阳质量引力波事件的后果。 我们预测，在正在进行的第四次观测运行期间，基于信号中较大的潮汐变形效应，就可以以极大的统计置信水平推断出亚太阳质量双星（由轻量中子星、原始黑洞或更奇特的致密天体组成）的性质。 探测到原始黑洞将对宇宙学和暗物质情景产生影响，而亚太阳质量中子星的潮汐变形测量可以排除或确认由夸克组成的奇异星的存在。 显示英文摘要

摘要： Detecting a compact subsolar object would have profound implications in physics, the reach of which depends on the nature of the object. Here we explore such consequences for a putative subsolar-mass gravitational wave event detected by the LIGO-Virgo-KAGRA Collaboration. We forecast that the nature of a subsolar binary (made of light neutron stars, primordial black holes, or more exotic compact objects) can be inferred with a great statistical confidence level already during the ongoing fourth observing run, based on the large tidal deformability effects on the signal. The detection of a primordial black hole would have implications for cosmology and dark matter scenarios, while the measurement of the tidal deformability of a subsolar neutron star could rule out or confirm the existence of strange stars made of quarks.