论文标题
在Palatini Higgs的晶格上预热
Preheating in Palatini Higgs inflation on the lattice
论文作者
论文摘要
我们研究了Higgs通货膨胀后重力公式的预热。我们在数值上进化了希格斯场的径向模式的扰动以及对仪表玻色子建模的三个标量的扰动。我们比较了激发生长的两种非扰动机制 - 参数共振和速度不稳定性 - 并确认后者起主要作用。我们的结果提供了进一步的证据，表明Palatini Higgs通货膨胀的预热发生在Higgs领域的单个振荡范围内，其潜力的底部与瞬时预热的近似相一致。
We study preheating following Higgs inflation in the Palatini formulation of gravity. We numerically evolve perturbations of the radial mode of the Higgs field and that of three scalars modeling the gauge bosons. We compare the two non-perturbative mechanisms of growth of excitations -- parametric resonance and tachyonic instability -- and confirm that the latter plays the dominant role. Our results provide further evidence that preheating in Palatini Higgs inflation happens within a single oscillation of the Higgs field about the bottom of its potential, consistent with the approximation of an instantaneous preheating.
