论文标题
大量自旋2鬼的通货膨胀
Inflation with Massive Spin-2 Ghosts
论文作者
论文摘要
我们考虑了二次重力的通用模型，该模型耦合到单个标量，并研究重力自由度对通货膨胀参数的影响。我们发现，由于巨大的自旋2幽灵而产生的量子校正为有效的通货膨胀潜力产生了重要贡献，并允许实现全球尺度不变性的自发分解，而无需其他额外的标量场。我们计算通货膨胀参数，将结果预测与众所周知的通货膨胀模型进行比较，并发现它们非常适合Planck和Bicep/Keck协作对通货膨胀的约束。
We consider a generic model of quadratic gravity coupled to a single scalar and investigate the effects of gravitational degrees of freedom on inflationary parameters. We find that quantum corrections arising from the massive spin-2 ghost generate significant contributions to the effective inflationary potential and allow for a realization of the spontaneous breakdown of global scale invariance without the need for additional scalar fields. We compute inflationary parameters, compare the resulting predictions to well-known inflationary models, and find that they fit well within the Planck and BICEP/Keck collaboration's constraints on inflation.
