论文标题
使用Ligo-Virgo目录GWTC-1的重力波中的CPT不变性测试
Tests of CPT invariance in gravitational waves with LIGO-Virgo catalog GWTC-1
论文作者
论文摘要
从二进制黑洞中发现引力波的发现可能会使它们的测量可以提供严格的重力波中CPT不变性测试。当存在CPT违规时，如果有的话，具有不同圆极化的重力波在传播速度方面可能会略有差异。因此，引起重力波的双折射，应有加号和交叉模式的旋转。 For CPT-violating dispersion relation ${ω^{2}=k^{2}}$ ${\pm 2ζk^{3}}$, where a sign ${\pm}$ denotes different circular polarizations, we find no substantial deviations from CPT invariance in gravitational waves by analyzing a compilation of ten signals of binary black holes in the Ligo-Virgo目录GWTC-1。我们对CPT-violating参数获得了严格的约束，即$ζ= 0.14^{+0.22} _ { - 0.31} \ times10^{ - 15} \ text {m text {m} $，大约要比现有一个好两个。因此，这项研究代表了重力波中CPT不变性的最新严格测试。
A discovery of gravitational waves from binary black holes raises a possibility that measurements of them can provide strict tests of CPT invariance in gravitational waves. When CPT violation exists, if any, gravitational waves with different circular polarizations could gain a slight difference in propagating speeds. Hence, the birefringence of gravitational waves is induced and there should be a rotation of plus and cross modes. For CPT-violating dispersion relation ${ω^{2}=k^{2}}$ ${\pm 2ζk^{3}}$, where a sign ${\pm}$ denotes different circular polarizations, we find no substantial deviations from CPT invariance in gravitational waves by analyzing a compilation of ten signals of binary black holes in the LIGO-Virgo catalog GWTC-1. We obtain a strict constraint on the CPT-violating parameter, i.e., $ζ=0.14^{+0.22}_{-0.31}\times10^{-15}\text{m}$, which is around two orders of magnitude better than the existing one. Therefore, this study stands for the up-to-date strictest tests of CPT invariance in gravitational waves.
