Inflation in de Sitter spacetime and CMB large scale anomaly  

作　　者：赵东 李明华 王平 常哲 

机构地区：[1]Institute of High Energy Physics, Chinese Academy of Sciences [2]School of Physics and Engineering, Sun Yat-Sen University

出　　处：《Chinese Physics C》2015年第9期65-68,共4页中国物理C（英文版）

基　　金：Supported by National Natural Science Foundation of China(11375203)

摘　　要：The influence of cosmological constant-type dark energy in the early universe is investigated. This is accommodated by a new dispersion relation in de Sitter spacetime. We perform a global fit to explore the cosmological parameter space by using the CosmoMC package with the recently released Planck TT and WMAP polarization datasets. Using the results from the global fit, we compute a new CMB temperature-temperature （TT） spectrum. The obtained TT spectrum has lower power compared with that based on the ACDM model at large scales.The influence of cosmological constant-type dark energy in the early universe is investigated. This is accommodated by a new dispersion relation in de Sitter spacetime. We perform a global fit to explore the cosmological parameter space by using the CosmoMC package with the recently released Planck TT and WMAP polarization datasets. Using the results from the global fit, we compute a new CMB temperature-temperature （TT） spectrum. The obtained TT spectrum has lower power compared with that based on the ACDM model at large scales.

关 键 词：de Sitter spacetime dark energy INFLATION ANISOTROPY 

分 类 号：P159[天文地球—天文学]