IHEP OpenIR  > 粒子天体物理中心
What can we learn from the tension between PLANCK and BICEP2 data?; What can we learn from the tension between PLANCK and BICEP2 data?
Li H(李虹); Xia JQ(夏俊卿); Zhang XM(张新民)
2014 ; 2014
Source PublicationSCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY ; SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
Issue8Pages:1431-1441
AbstractRecently BICEP2 collaboration has announced the detection of the primordial gravitational waves at high confidence level.In light of the results of B-modes power spectrum from BICEP2 and using the basedΛCDM,a constraint on the tensor-to-scalar ratio r=0.20+0.07-0.05(68%C.L.)can be obtained,however,this result is in apparent tension with the limit on standard inflation models from the recent PLANCK measurement,r<0.11(95%C.L.).Herein we review the recent progress on the cosmological studies after BICEP2 and discuss on different ways of reconciling the tension between PLANCK and BICEP2 data.We will discuss possible modifications on the standard cosmological model,such as including the running of scalar spectral index or other cosmological parameters correlated with inflationary cosmological parameters,or tilting the primordial power spectrum at large scales by introducing a cut off which can be predicted by bouncing cosmology.We will also comment on another possibility of generating extra B-modes of CMB polarization,namely by a non-zero polarization rotation angle during its transferring from the last scattering surface.; Recently BICEP2 collaboration has announced the detection of the primordial gravitational waves at high confidence level.In light of the results of B-modes power spectrum from BICEP2 and using the basedΛCDM,a constraint on the tensor-to-scalar ratio r=0.20+0.07-0.05(68%C.L.)can be obtained,however,this result is in apparent tension with the limit on standard inflation models from the recent PLANCK measurement,r<0.11(95%C.L.).Herein we review the recent progress on the cosmological studies after BICEP2 and discuss on different ways of reconciling the tension between PLANCK and BICEP2 data.We will discuss possible modifications on the standard cosmological model,such as including the running of scalar spectral index or other cosmological parameters correlated with inflationary cosmological parameters,or tilting the primordial power spectrum at large scales by introducing a cut off which can be predicted by bouncing cosmology.We will also comment on another possibility of generating extra B-modes of CMB polarization,namely by a non-zero polarization rotation angle during its transferring from the last scattering surface.
KeywordLI Hong Chinese Academy of Science Chinese Academy of Sciences University of Science and Technology of China Central China Normal University University of Chinese Academy of Sciences LI Hong Chinese Academy of Science Chinese Academy of Sciences University of Science and Technology of China Central China Normal University University of Chinese Academy of Sciences LI MingZhe National Astronomical Observatories Interdisciplinary Center for Theoretical Study Institute of Astrophysics School of Physics Theoretical Physics Division LI MingZhe National Astronomical Observatories Interdisciplinary Center for Theoretical Study Institute of Astrophysics School of Physics Theoretical Physics Division QIU TaoTao QIU TaoTao XIA JunQing XIA JunQing PIAO YunSong PIAO YunSong ZHANG XinMin(Key Laboratory of Particle Astrophysics ZHANG XinMin(Key Laboratory of Particle Astrophysics Institute of High Energy Physics Institute of High Energy Physics Institute of High Energy Physics Institute of High Energy Physics Chinese Academy of Sciences) Chinese Academy of Sciences)
Indexed BySCI ; ADS ; ADS ; ADS ; SCI ; ADS ; ADS
Language英语 ; 英语
WOS IDWOS:000339365800003 ; WOS:000339365800003
ADS Bibcode2014SCPMA..57.1431L ; 2014SCPMA..57.1431L
ADS URLhttps://ui.adsabs.harvard.edu/abs/2014SCPMA..57.1431L ; https://ui.adsabs.harvard.edu/abs/2014SCPMA..57.1431L
ADS CITATIONShttps://ui.adsabs.harvard.edu/abs/2014SCPMA..57.1431L/citations ; https://ui.adsabs.harvard.edu/abs/2014SCPMA..57.1431L/citations
Citation statistics
Cited Times:9 [ADS]
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/218080
Collection粒子天体物理中心
Recommended Citation
GB/T 7714
Li H,Xia JQ,Zhang XM. What can we learn from the tension between PLANCK and BICEP2 data?, What can we learn from the tension between PLANCK and BICEP2 data?[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY, SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2014, 2014(8):1431-1441, 1431-1441.
APA 李虹,夏俊卿,&张新民.(2014).What can we learn from the tension between PLANCK and BICEP2 data?.SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY(8),1431-1441.
MLA 李虹,et al."What can we learn from the tension between PLANCK and BICEP2 data?".SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY .8(2014):1431-1441.
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