论文标题
在palatini形式主义中提出的F(r,h)理论中的通货膨胀和加热
Inflation and Reheating in f(R,h) theory formulated in the Palatini formalism
论文作者
论文摘要
构建了使用Palatini形式主义中修改重力通货膨胀的新模型。这里考虑了标量场h与曲率r作为一般函数f(r,h)的非最小耦合。开发了一些F(R,H)选择的明确通货膨胀模型。通过为此模型编写等效标量调整动作并进入爱因斯坦框架,构建了慢速参数。存在一个较大的参数空间,该空间满足N_S的值以及与Planck 2018数据兼容的限制。此外,我们计算重新加热温度和在所有构造模型的状态参数方程式重新加热时的E倍数。
A new model for inflation using modified gravity in the Palatini formalism is constructed. Here non-minimal coupling of scalar field h with the curvature R as a general function f(R,h) is considered. Explicit inflation models for some choices of f(R,h) are developed. By writing an equivalent scalar-tensor action for this model and going over to Einstein frame, slow roll parameters are constructed. There exists a large parameter space which satisfies values of n_s and limits on r compatible with Planck 2018 data. Further, we calculate reheating temperature and the number of e-folds at the end of reheating for different values of equation of state parameter for all the constructed models.