论文标题
在轴 - -SU（2）通货膨胀期间重力Chern-Simons的影响
Effects of Gravitational Chern-Simons during Axion-SU(2) Inflation
论文作者
论文摘要
在本文中，我们通过Chern-Simons耦合来研究具有与重力和SU（2）仪（2）量规场耦合的膨胀模型的可行性。需要轴突SU（2）部门的现象学成功限制了重力Chern-Simons项的耦合强度。我们发现，如果截止量表低至$λ$ = 20h，那么该术语对引力波的产生和传播的影响可能会高达50％的增强。对于$λ$的较大值，效果变得较小，而对量规场产生的螺旋性的影响都可以忽略不计，而不管$λ$。
In this paper, we examine the viability of inflation models with a spectator axion field coupled to both gravitational and SU(2) gauge fields via Chern-Simons couplings. Requiring phenomenological success of the axion-SU(2) sector constrains the coupling strength of the gravitational Chern-Simons term. We find that the impact of this term on the production and propagation of gravitational waves can be as large as fifty percent enhancement for the helicity that is not sourced by the gauge field, if the cut-off scale is as low as $Λ$ = 20H. The effect becomes smaller for a larger value of $Λ$, while the impact on the helicity sourced by the gauge field is negligible regardless of $Λ$.
