论文标题
热浪事件：混合希格斯 - $ r^2 $在晶格上预热
A heatwave affair: mixed Higgs-$R^2$ preheating on the lattice
论文作者
论文摘要
We use lattice methods to perform the first nonlinear study of preheating in $R^2$-healed Higgs inflation for "$R^2$-like" parameters $1.1\times 10^9$ and $1.8\times 10^9$ where the curvature-squared coupling $β$ and nonminimal coupling $ξ$ of the Higgs field contribute similarly to the CMB标量扰动。预热首先是通过希格斯玻色子的速旋生产而进行的，然后散布在同质的通气场中。我们将结果推广到具有较小$β$的“基格斯样”参数，在这些参数中可观察到瞬时预热的结合。光谱指数和张量尺度比率的所有预测都在普朗克卫星的1σ$测量区域内，但是针对21 cm层析成像优化的未来基于地面的实验可能能够区分纯Higgs和$ r^2 $ theeories的混合Higgs-Higgs-curvate膨胀。
We use lattice methods to perform the first nonlinear study of preheating in $R^2$-healed Higgs inflation for "$R^2$-like" parameters $1.1\times 10^9$ and $1.8\times 10^9$ where the curvature-squared coupling $β$ and nonminimal coupling $ξ$ of the Higgs field contribute similarly to the CMB scalar perturbations. Preheating occurs first through tachyonic production of Higgs bosons, and later scattering off the homogeneous inflaton field. We generalise our results to "Higgs-like" parameters with smaller $β$, where observables saturate the bound of instantaneous preheating. All predictions for the spectral index and tensor-to-scalar ratio lie within the $1σ$ region of measurements by the Planck satellite, but a future ground-based experiment optimised for 21 cm tomography may be able to discriminate the mixed Higgs-curvature inflation from the pure Higgs and $R^2$ theories.
