论文标题
非振荡的无尺度通货膨胀
Non-Oscillatory No-Scale Inflation
论文作者
论文摘要
我们提出了一种非振荡性的无尺度通货膨胀模型（禁止通货膨胀），其中充气在通货膨胀时代结束时不会振荡。取而代之的是，宇宙被充气动能密度（Kination）主导。在从通货膨胀到Kination的过渡期间，宇宙通过耦合到类似Higgs的田地立即预热。这些迅速歼灭并散布成超偏见的物质颗粒，后来主导能量密度，并在远高于大爆炸核合成的温度下加热。电动eakeak过渡后，充气进入跟踪阶段，就像某些典型通货膨胀模型中一样。宇宙微波背景可观察物的模型预测与Planck 2018数据一致，重力波的密度低于大爆炸核合成的上限。我们还发现，Gravitino Decay产生的超对称冷暗物质的密度与Planck 2018的数据相对于超对称颗粒质量的预期范围一致。
We propose a non-oscillatory no-scale supergravity model of inflation (NO-NO inflation) in which the inflaton does not oscillate at the end of the inflationary era. Instead, the Universe is then dominated by the inflaton kinetic energy density (kination). During the transition from inflation to kination, the Universe preheats instantly through a coupling to Higgs-like fields. These rapidly annihilate and scatter into ultra-relativistic matter particles, which subsequently dominate the energy density, and reheating occurs at a temperature far above that of Big Bang Nucleosynthesis. After the electroweak transition, the inflaton enters a tracking phase as in some models of quintessential inflation. The model predictions for cosmic microwave background observables are consistent with Planck 2018 data, and the density of gravitational waves is below the upper bound from Big Bang Nucleosynthesis. We also find that the density of supersymmetric cold dark matter produced by gravitino decay is consistent with Planck 2018 data over the expected range of supersymmetric particle masses.
