论文标题
带有反对称张量场的通货膨胀引力波
Gravitational waves from inflation with antisymmetric tensor field
论文作者
论文摘要
我们基于过去对等级-2反对称张量场的通货膨胀的研究，其中包括对度量的张量扰动。在存在非最小耦合曲率项$ r $和$ r_ {μν} $的情况下，我们对模型的背景动力学进行了全面分析。我们在非最小耦合参数上找到适当的条件，以满足引力波传播速度的约束。包括张量的扰动，发现该模型没有幽灵不稳定性，对参数的约束最少。我们还研究了重力波的演化，计算功率谱和张量光谱指数。
We build upon the past studies of inflation with rank-2 antisymmetric tensor field, including here the tensor perturbations to metric. We perform a comprehensive analysis of the background dynamics of our model in the presence of non-minimal coupling curvature terms $R$ and $R_{μν}$. We find appropriate conditions on the nonminimal coupling parameters to satisfy the constraint of speed of propagation of gravitational waves. Including the tensor perturbations, the model is found to be free from ghost instabilities with minimal constraints on the parameters. We also study the evolution of gravitational waves, calculate the power spectrum and the tensor spectral index.
