标题： 幻影膨胀与阶跃势能 显示英文标题

标题： Phantom Inflation with A Steplike Potential

摘要： phantom 膨胀预测了张量扰动的略微蓝移光谱，这可能在即将到来的观测中得到检验。在常规膨胀模型中，势能中引入台阶一般会在曲率扰动的原初幂谱中导致振荡。我们将检查在具有台阶状势能的 phantom 膨胀中是否存在类似情况。我们发现，对于相同的势能，phantom 膨胀光谱的振荡与常规膨胀几乎相同，它们之间的差异是幂谱的倾斜度。 显示英文摘要

摘要： The phantom inflation predicts a slightly blue spectrum of tensor perturbation, which might be tested in coming observations. In normal inflation models, the introduction of step in its potential generally results in an oscillation in the primordial power spectrum of curvature perturbation. We will check whether there is a similar case in the phantom inflation with steplike potential. We find that for same potentials, the oscillation of the spectrum of phantom inflation is nearly same with that of normal inflation, the difference between them is the tilt of power spectrum.