论文标题
混合膨胀中瀑布的有效现场理论
Effective field theory of waterfall in hybrid inflation
论文作者
论文摘要
我们研究了从有效的田间理论（EFT）的角度研究瀑布相变的经典近似的有效性。 EFT是通过整合瀑布场波动来构建的，在扰动膨胀中最多可达一环顺序。假设遵守缓慢的滚动条件，在瀑布阶段开始后，我们发现瀑布场波动向系统演变的反应可能是主要的。在这种情况下，经典的近似被完全宠坏了。我们得出了确保EFT有效性的必要约束。
We examine the validity of the classical approximation of the waterfall phase transition in hybrid inflation from an effective field theory (EFT) point of view. The EFT is constructed by integrating out the waterfall field fluctuations, up to one-loop order in the perturbative expansion. Assuming slow-roll conditions are obeyed, right after the onset of the waterfall phase, we find the backreaction of the waterfall field fluctuations to the evolution of the system can be dominant. In this case the classical approximation is completely spoiled. We derive the necessary constraint that ensures the validity of the EFT.
