论文标题
原始密度扰动的轴突状起源
Axionlike Origin of the Primordial Density Perturbation
论文作者
论文摘要
我们表明，与新的限制量规组耦合的轴心般的场可以在后通货膨胀宇宙中产生原始密度扰动。轴衰变常数和强耦合量表是通过观察到密度扰动的唯一确定的，这进一步表明膨胀后量规组的时间解密。所得的温度依赖性轴势及其周期性产生了红倾斜密度的扰动，并具有局部型非高斯统一性的正类型。
We show that an axionlike field coupled to a new confining gauge group can generate the primordial density perturbation in the post-inflation universe. The axion decay constant and strong coupling scale are uniquely determined by observations of the density perturbation, which further suggest a temporal deconfinement of the gauge group after inflation. The resulting temperature-dependent axion potential, together with its periodic nature, gives rise to the red-tilted density perturbation, with a positive local-type non-Gaussianity of order unity.
