Constraints on the generalized natural inflation after Planck 2018

作     者：Nan Zhang Ya-Bo Wu Jun-Wang Lu Chu-Wen Sun Li-Jie Shou Hai-Zhou Xu 张楠;吴亚波;鲁军旺;孙楚雯;守丽杰;徐海洲

作者机构：Department of PhysicsLiaoning Normal UniversityDalian 116029China School of Physics and ElectronicsQiannan Normal University for NationalitiesDuyun 558000China 

出 版 物：《Chinese Physics C》 (中国物理C（英文版）)

年 卷 期：2020年第44卷第9期

页      面：231-238页

核心收录：

学科分类：07[理学] 070401[理学-天体物理] 0704[理学-天文学] 

基　　金：Supported by the National Natural Science Foundation of China(11575075 11705079 11865012) 

主　　题：early universe inflation model of inflation observational tests of inflation reheating 

摘      要：Based on the dynamics of single scalar field slow-roll inflation and the theory of reheating,we investigate the generalized natural inflationary(GNI)*** introduce constraints on the scalar spectral index ns and the tensor-to scalar ratio r for theΛCDM+r model,according to the latest data from Planck 2018 TT,TE,EE+low E+lensing(P18)and BICEP2/Keck 2015 season(BK15),i.e.,with ns=0.9659±0.0044 at 68%confidence level(CL),and r0.0623 at 95%*** find that the GNI model is favored by P18 and BK15 in the ranges log10(f/Mp)=0.62^+0.17−0.18 and m=0.35^+0.13−0.23 at 68%*** addition,the corresponding predictions of generalized and two-phase reheating are *** follows that the parameter m has significant effect on the model behavior.