论文标题
循环量子宇宙学中的温暖弹跳和通货膨胀持续时间的预测
Warm bounce in loop quantum cosmology and the prediction for the duration of inflation
论文作者
论文摘要
我们研究并估计弹跳前量子量子宇宙学后充电前和慢速阶段的持续时间的概率预测，确定前爆发阶段中辐射的存在如何影响这些结果。我们介绍了包括单一幂律混沌类型的电位的不同类别的通货膨胀电位的分析，即二次，四分之一和六型电位，以及HIGGS样对称性破坏电位，考虑到后者的真空预期值不同的值。我们获得了通货膨胀电子折叠数量和每个模型其他相关数量的概率密度函数，并从这些分布中产生概率结果。这项研究使我们可以讨论每个模型最终可能导致在宇宙微波背景的光谱上可观察到的特征，或者因未预测足够量的加速扩张而被排除在外。明确量化了辐射对每个模型预测的影响。获得的结果表明，环路量子宇宙学中的通货膨胀E折数量不是先验的任意数量，但原则上可以是可预测的数量，即使结果取决于模型和通货膨胀率开始之前的宇宙辐射量。
We study and estimate probabilistic predictions for the duration of the preinflationary and slow-roll phases after the bounce in loop quantum cosmology, determining how the presence of radiation in the prebounce phase affects these results. We present our analysis for different classes of inflationary potentials that include the monomial power-law chaotic type of potentials, namely, for the quadratic, quartic and sextic potentials and also for a Higgs-like symmetry breaking potential, considering different values for the vacuum expectation value in the latter case. We obtain the probability density function for the number of inflationary e-folds and for other relevant quantities for each model and produce probabilistic results drawn from these distributions. This study allows us to discuss under which conditions each model could eventually lead to observable signatures on the spectrum of the cosmic microwave background, or, else, be also excluded for not predicting a suffcient amount of accelerated expansion. The effect of radiation on the predictions for each model is explicitly quantified. The obtained results indicate that the number of inflationary e-folds in loop quantum cosmology is not a priori an arbitrary number, but can in principle be a predictable quantity, even though the results are dependent on the model and on the amount of radiation in the Universe prior to the start of the inflationary regime.
