论文标题
latticeeasy预热对实际标量通货膨胀的限制
Constraints on real scalar inflation from preheating of LATTICEEASY
论文作者
论文摘要
在本文中，我们通过使用晶状体模拟来研究预热现象，对实际标量通货膨胀进行了详细的研究。通常，具有非最小耦合的标量通胀电位可以通过四分之一的势近似。我们观察到，该电位的进化行为仍然不受耦合系数的影响。此外，标量光谱指数（$ n_s $）和张量表功率比（R）的理论预测也与该系数无关。因此，该模型的系数不受普朗克观测的限制。幸运的是，通货膨胀后预热的特性提供了一种可行的方法来检查这些系数。通过晶状体模拟，我们在预热过程中追踪颗粒数密度，比例因子和能量密度的演变。随后，我们得出参数，例如能量比（$γ$）和电子折叠数量的预热（$ n_ {pre} $），这有助于进一步预测$ n_s $和$ r $。我们已经基于预热模型和通货膨胀模型之间的分析关系，使用晶状体模拟的预热成功验证了实际标量通货膨胀模型。
In this paper, we undertake a detailed study of real scalar inflation by employing LATTICEEASY simulations to investigate preheating phenomena. Generally, the scalar inflation potential with non-minimal coupling can be approximated by a quartic potential. We observe that the evolutionary behavior of this potential remains unaffected by the coupling coefficient. Furthermore, the theoretical predictions for the scalar spectral index ($n_s$) and tensor-to-scalar power ratio (r) are also independent of this coefficient. Consequently, the coefficients of this model are not constrained by Planck observations. Fortunately, the properties of preheating after inflation provide a viable approach to examine these coefficients. Through LATTICEEASY simulations, we trace the evolution of particle number density, scale factor, and energy density during the preheating process. Subsequently, we derive the parameters, such as the energy ratio ($γ$) and the e-folding number of preheating ($N_{pre}$), which facilitate further predictions of $n_s$ and $r$. We have successfully validated real scalar inflation model using preheating of LATTICEEASY simulations based on the analytical relationship between preheating and inflation models.
