Simple single field inflation models and the running of spectral index  

作　　者：GAO Qing GONG YunGui LI TianJun YE Tian 

机构地区：[1]MOE Key Laboratory of Fundamental Quantities Measurement, School of Physics, Huazhong University of Science and Technology [2]State Key Laboratory of Theoretical Physics and Kavli Institute for Theoretical Physics China,Institute of Theoretical Physics, Chinese Academy of Sciences [3]School of Physical Electronics, University of Electronic Science and Technology of China

出　　处：《Science China(Physics,Mechanics & Astronomy)》2014年第8期1442-1448,共7页中国科学：物理学、力学、天文学（英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant Nos. 11075194, 11135003, 11175270 and 11275246);the National Basic Research Program of China (Grant No. 2010CB833000 (TL));the Program for New Century Excellent Talents in University (Grant No. NCET-12-0205);the Fundamental Research Funds for the Central Universities (Grant No. 2013YQ055)

摘　　要：The BICEP2 experiment confirms the existence of primordial gravitational wave with the tensor-to-scalar ratio r = 0 ruled out at 70- level. The consistency of this large value of r with the Planck data requires a large negative running n＇s of the scalar spectral index. Herein we propose two types of the single field inflation models with simple potentials to study the possibility of the consistency of the models with the BICEP2 and Planck observations. One type of model suggested herein is realized in the supergravity model building. These models fail to provide the needed n＇s even though both can fit the tensor-to-scalar ratio and spectral index.The BICEP2 experiment confirms the existence of primordial gravitational wave with the tensor-to-scalar ratio r=0 ruled out at 7σlevel.The consistency of this large value of r with the Planck data requires a large negative running n′sof the scalar spectral index.Herein we propose two types of the single field inflation models with simple potentials to study the possibility of the consistency of the models with the BICEP2 and Planck observations.One type of model suggested herein is realized in the supergravity model building.These models fail to provide the needed n′seven though both can fit the tensor-to-scalar ratio and spectral index.

关 键 词：single field inflation BICEP2 results supergravity model building 

分 类 号：O552.1[理学—热学与物质分子运动论]