AI 中文总结
该研究探讨动力学挠率驱动的暴胀，计算暴胀子衰变率发现其存在非零的反常诱导衰变过程，进而给出此类暴胀模型的再加热温度下限。
AI 中文摘要
在含挠率的引力理论中，暴胀可由动力学挠率驱动。由于其自然具有与标准模型粒子组成的轴矢流的导数耦合，再加热动力学与Starobinsky暴胀等传统暴胀模型有显著差异。我们详细计算了暴胀子的衰变率，发现尽管无质量费米子极限下，暴胀子衰变为费米子对的两体过程消失，但反常诱导的衰变为规范玻色子的两体过程及涉及希格斯玻色子的三体过程非零，且对暴胀子总衰变宽度有可观贡献，这为动力学挠率暴胀模型提供了自然的再加热温度下限。
英文摘要
In gravity theories with torsion, inflation can be driven by the dynamical torsion. Since it naturally has a derivative coupling to the axial current consisting of Standard Model particles, the reheating dynamics should be much different from conventional inflation models like Starobinsky inflation. We calculate the inflaton decay rate in detail and find that, although the 2 body decay into the fermion pair is vanishing in the massless fermion limit, the anomaly-induced 2 body decay into the gauge bosons and 3 body decay involving the Higgs boson are non-vanishing and they give sizable contributions to the total decay width of the inflaton. This gives a natural lower bound on the reheating temperature in the inflation model with dynamical torsion.
Comments33 pages, 8 figures
