论文标题
Chern-Simons修饰的重力的循环极化标量引起的重力波
Circularly polarized scalar induced gravitational waves from the Chern-Simons modified gravity
论文作者
论文摘要
我们研究了Chern-Simons（CS）改性重力的标量引起的重力波（SIGW）。 SIGW是循环两极化的，这为我们提供了一种测试早期宇宙中可能违规行为的工具。我们得出半分析表达式来评估SIGWS的分数能量密度，$ω_ {\ Mathrm {GW}} $，该$分别从一般相对（GR）和均等竞争期间获得校正的贡献。我们发现，SIGWS的圆极化程度可能与订单统一一样大，尽管从CS项中对$ω_ {\ Mathrm {gw}} $的贡献与GR中的顺序相同。
We investigate the scalar induced gravitational waves (SIGWs) in the Chern-Simons (CS) modified gravity during the radiation dominated era. The SIGWs are circularly polarized, which provide us a tool to test the possible parity violation in the early universe. We derive the semianalytic expressions to evaluate the fractional energy density of the SIGWs, $Ω_{\mathrm{GW}}$, which receives contributions from the general relativity (GR) and the correction due to the parity-violating term, respectively. We find that the degree of the circular polarization of the SIGWs can be as large as of order unity, although the contribution to $Ω_{\mathrm{GW}}$ from the CS term is at most of the same order as that from the GR.
