论文标题
多量化模型的特殊情况 - 了解延长通货膨胀
Special cases of the Multi-Measure Model -- understanding the prolonged inflation
论文作者
论文摘要
多次测量模型（MMM）在其中修改了该动作，以包括riemannian措施和非利曼尼亚人的措施，已证明能够产生可行的宇宙演化方案。在本文中，我们考虑了多种测量模型的两个特殊案例，其中我们首先将两个动力学术语完全解除，然后完全消除模型的深度电荷。我们从数字上表明，这些特殊情况仍然具有宇宙所需的进化阶段，此外，对于他们来说，人们可以获得足够数量的早期通货膨胀。在第一种情况下，充气仍在通货膨胀期间的有效潜力上向后移动，而在第二种情况下，这并不意味着这种行为来自黑暗电荷。我们将模型与高充气模型联系起来，并研究了两个标量场之间的相互作用的不同时期。我们证明存在动态诱导的慢速时代，这是由于两个标量在场空间中的复杂运动延长的。最后，我们表明，尽管声音的绝热速度可能会变得虚构，但声音的相位速度仍然是真实的。
The multi-measure model (MMM), in which one modifies the action to include both the Riemannian measure and a non-Riemannian one, has proven to be able to produce viable Universe evolution scenarios. In this article we consider two special cases of the multi-measure model, in which we first decouple the two kinetic terms in the Lagrangian entirely and later remove the dark charge of the model. We show numerically that those special cases still possess the needed evolutionary stages of the Universe and furthermore, for them one can obtain a sufficient number of e-folds of the early inflation. In the first case, the inflaton still moves backwards on the effective potential during inflation, while in the second, it does not, meaning that this behavior comes from the dark charge. We connect the model with hyperinflationary models and investigate how the different epochs are born from the interplay between the two scalar fields. We demonstrate that there is a dynamically induced slow-roll epoch, which is prolonged by the complicated movement of the two scalars in the field space. Finally, we show that while the adiabatic speed of sound can become imaginary, the phase speed of sound remains real.
