论文标题
模仿曲线
Mimetic Curvaton
论文作者
论文摘要
在本文中，我们研究了由多场模仿重力诱导的通货膨胀模型的原始扰动，在通货膨胀期间有两个领域，因此产生了绝热和同化扰动模式。我们表明，尽管原始的绝热扰动模式确实是通过应用Curvaton机制而失去动力学项的，在该机制中，该场将其中一个视为Curvaton场，但在通货膨胀结束时实际上可以从异位效果转移绝热扰动。对通货膨胀和随之而来的物质主导时期进行了详细的计算。因此，绝热模式的所谓“非传播问题”实际上不会损害多场模拟膨胀模型。
In this paper, we investigate the primordial perturbations of inflation model induced from the multi-field mimetic gravity, where there are two field during inflation, and thus both adiabatic and isocurvature perturbation modes are generated. We show that although it is true that the original adiabatic perturbation mode loses the kinetic term due to the constraint equation, by applying the curvaton mechanism where one of the field is viewed as curvaton field, the adiabatic perturbation can actually be transferred from the isocurvature one at the end of inflation. Detailed calculations are performed for both inflationary and the consequent matter-dominant epochs. Therefore, the so-called "non-propagating problem" of the adiabatic mode will actually do no harm to the multi-field mimetic inflation models.
