论文标题
通货膨胀结束时违反重力波的奇偶校验
Parity violating gravitational waves at the end of inflation
论文作者
论文摘要
$ ϕf \ tilde {f} $类型的Aftraton-vector相互作用提供了有趣的现象学来解决宇宙学中一些当前问题，即矢量可能构成暗物质成分。这也可能导致可能在引力波谱中印记的特征。通过这种耦合，滚动充气诱导矢量场横向极化的指数产生，当充气场速度达到最大值时，在通货膨胀结束时最大值。这些量规粒子已经不对称，将采购度量扰动的张量成分，从而导致违反重力波的平等产生。在这项工作中，我们研究了矢量颗粒的产生，以模仿其对弱耦合方案通货膨胀演化的反应影响。此外，我们在此生产时期内完全整合了量规颗粒幅度的光谱，并研究了行为，直到重新加热结束为止。最后，我们计算仅依赖于矢量模式WKB扩展的重力波谱。
Inflaton-vector interactions of the type $ϕF\tilde{F}$ have provided interesting phenomenology to tackle some of current problems in cosmology, namely the vectors could constitute the dark matter component. It could also lead to possible signatures imprinted in a gravitational wave spectrum. Through this coupling, a rolling inflaton induces an exponential production of the transverse polarizations of the vector field, having a maximum at the end of inflation when the inflaton field velocity is at its maximum. These gauge particles, already parity asymmetric, will source the tensor components of the metric perturbations, leading to the production of parity violating gravitational waves. In this work we examine the vector particle production with an attempt to mimic its backreaction effects on the inflation evolution in the weak coupling regime. Furthermore, we fully integrate the gauge particle amplitudes spectrum during this production epoch, studying the behavior until the end of reheating. Finally, we calculate the gravitational wave spectrum solely relying on the vector mode WKB expansion in its regime of validity.
