论文标题
古典宇宙撞机物理和原始特征
Classical Cosmological Collider Physics and Primordial Features
论文作者
论文摘要
通货膨胀景观中的特征可以向通货膨胀模型注入额外的能量，并产生质量比通货膨胀范围大得多的壳颗粒。这种可能性扩大了宇宙撞机物理程序的能量范围，其中与这些颗粒相关的信号通常是玻尔兹曼抑制的。我们在两类原始特征中研究了这种经典宇宙对撞机的机制。在第一类中，原始特征是经典的振荡，其中包括大规模场的相干振荡和通货膨胀潜力中振荡特征的情况。第二类包括通货膨胀模型中的任何尖锐特征。所有这些经典特征都可以激发其他重型场的未抑制量子模式，这些量子会在原始非高斯语中留下观察性特征，包括有关这些重度自由度的粒子光谱的信息。
Features in the inflationary landscape can inject extra energies to inflation models and produce on-shell particles with masses much larger than the Hubble scale of inflation. This possibility extends the energy reach of the program of cosmological collider physics, in which signals associated with these particles are generically Boltzmann-suppressed. We study the mechanisms of this classical cosmological collider in two categories of primordial features. In the first category, the primordial feature is classical oscillation, which includes the case of coherent oscillation of a massive field and the case of oscillatory features in the inflationary potential. The second category includes any sharp feature in the inflation model. All these classical features can excite unsuppressed quantum modes of other heavy fields which leave observational signatures in primordial non-Gaussianities, including the information about the particle spectra of these heavy degrees of freedom.
